update

.deepsource.toml

@@ -0,0 +1,7 @@
+version = 1
+
+[[analyzers]]
+name = "javascript"
+
+  [analyzers.meta]
+  environment = ["nodejs"]

.dockerignore

@@ -0,0 +1,21 @@
+# OS directory info files
+.DS_Store
+desktop.ini
+
+# node
+node_modules
+
+# static build
+build
+
+# secrets
+.env
+.env.*
+!.env.example
+cookies.json
+
+# docker
+docker-compose.yml
+
+# ide
+.vscode

.gitignore

@@ -0,0 +1,21 @@
+# OS directory info files
+.DS_Store
+desktop.ini
+
+# node
+node_modules
+
+# static build
+build
+
+# secrets
+.env
+.env.*
+!.env.example
+cookies.json
+
+# docker
+docker-compose.yml
+
+# ide
+.vscode

CONTRIBUTING.md

@@ -0,0 +1,39 @@
+# contributing to cobalt
+if you're reading this, you are probably interested in contributing to cobalt, which we are very thankful for :3
+
+this document serves as a guide to help you make contributions that we can merge into the cobalt codebase.
+
+## translations
+currently, we are **not accepting** translations of cobalt. this is because we are making significant changes to the frontend, and the currently used localization structure is being completely reworked. if this changes, this document will be updated.
+
+## adding features or support for services
+before putting in the effort to implement a feature, it's worth considering whether it would be appropriate to add it to cobalt. the cobalt api is built to assist people **only with downloading freely accessible content**. other functionality, such as:
+- downloading paid / not publicly accessible content
+- downloading content protected by DRM
+- scraping unrelated information & exposing it outside of file metadata
+
+will not be reviewed or merged.
+
+if you plan on adding a feature or support for a service, but are unsure whether it would be appropriate, it's best to open an issue and discuss it beforehand.
+
+## git
+when contributing code to cobalt, there are a few guidelines in place to ensure that the code history is readable and comprehensible.
+
+### clean commit messages
+internally, we use a format similar to [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) - the first part signifies which part of the code you are changing (the *scope*), and the second part explains the change. for inspiration on how to write appropriate commit titles, you can take a look at the [commit history](https://github.com/imputnet/cobalt/commits/).
+
+the scope is not strictly defined, you can write whatever you find most fitting for the particular change. suppose you are changing a small part of a more significant part of the codebase. in that case, you can specify both the larger and smaller scopes in the commit message for clarity (e.g., if you were changing something in internal streams, the commit could be something like `stream/internal: fix object not being handled properly`).
+
+if you think a change deserves further explanation, we encourage you to write a short explanation in the commit message ([example](https://github.com/imputnet/cobalt/commit/d2e5b6542f71f3809ba94d56c26f382b5cb62762)), which will save both you and us time having to enquire about the change, and you explaining the reason behind it.
+
+if your contribution has uninformative commit titles, you may be asked to interactively rebase your branch and amend each commit to include a meaningful title.
+
+### clean commit history
+if your branch is out of date and/or has some merge conflicts with the `current` branch, you should **rebase** it instead of merging. this prevents meaningless merge commits from being included in your branch, which would then end up in the cobalt git history.
+
+if you find a mistake or bug in your code before it's merged or reviewed, instead of making a brand new commit to fix it, it would be preferable to amend that specific commit where the mistake was first introduced. this also helps us easily revert a commit if we discover that it introduced a bug or some unwanted behavior.
+- if the commit you are fixing is the latest one, you can add your files to staging and then use `git commit --amend` to apply the change.
+- if the commit is somewhere deeper in your branch, you can use `git commit --fixup=HASH`, where *`HASH`* is the commit you are fixing.
+    - afterward, you must interactively rebase your branch with `git rebase -i current --autosquash`.
+      this will open up an editor, but you don't need to do anything else except save the file and exit.
+- once you do either of these things, you will need to do a **force push** to your branch with `git push --force-with-lease`.

Dockerfile

@@ -0,0 +1,25 @@
+FROM node:20-bullseye-slim AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+
+FROM base AS build
+WORKDIR /app
+COPY . /app
+
+RUN corepack enable
+RUN apt-get update && \
+    apt-get install -y python3 build-essential
+
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store \
+    pnpm install --prod --frozen-lockfile
+
+RUN pnpm deploy --filter=@imput/cobalt-api --prod /prod/api
+
+FROM base AS api
+WORKDIR /app
+
+COPY --from=build /prod/api /app
+COPY --from=build /app/.git /app/.git
+
+EXPOSE 9000
+CMD [ "node", "src/cobalt" ]

LICENSE

@@ -0,0 +1,661 @@
+                    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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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
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+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
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+
+    save what you love with cobalt.
+    Copyright (C) 2024 imput
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
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+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
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+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

api/LICENSE

@@ -0,0 +1,661 @@
+                    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
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
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+
+  A contributor's "essential patent claims" are all patent claims
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+
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+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
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+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  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.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    save what you love with cobalt.
+    Copyright (C) 2024 imput
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

api/README.md

@@ -0,0 +1,22 @@
+# cobalt api
+
+## license
+cobalt api code is licensed under [AGPL-3.0](LICENSE).
+
+this license allows you to modify, distribute and use the code for any purpose
+as long as you:
+- give appropriate credit to the original repo when using or modifying any parts of the code,
+- provide a link to the license and indicate if changes to the code were made, and
+- release the code under the **same license**
+
+## running your own instance
+if you want to run your own instance for whatever purpose, [follow this guide](/docs/run-an-instance.md).
+it's *highly* recommended to use a docker compose method unless you run for developing/debugging purposes.
+
+## accessing the api
+currently, there is no publicly accessible main api. we plan on providing a public api for
+cobalt 10 in some form in the future. we recommend deploying your own instance if you wish
+to use the latest api. you can access [the documentation](/docs/api.md) for it here.
+
+if you are looking for the documentation for the old (7.x) api, you can find
+it [here](https://github.com/imputnet/cobalt/blob/7/docs/api.md)

api/package.json

@@ -0,0 +1,49 @@
+{
+    "name": "@imput/cobalt-api",
+    "description": "save what you love",
+    "version": "10.1.0",
+    "author": "imput",
+    "exports": "./src/cobalt.js",
+    "type": "module",
+    "engines": {
+        "node": ">=18"
+    },
+    "scripts": {
+        "start": "node src/cobalt",
+        "setup": "node src/util/setup",
+        "test": "node src/util/test",
+        "token:youtube": "node src/util/generate-youtube-tokens"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/imputnet/cobalt.git"
+    },
+    "license": "AGPL-3.0",
+    "bugs": {
+        "url": "https://github.com/imputnet/cobalt/issues"
+    },
+    "homepage": "https://github.com/imputnet/cobalt#readme",
+    "dependencies": {
+        "@imput/version-info": "workspace:^",
+        "content-disposition-header": "0.6.0",
+        "cors": "^2.8.5",
+        "dotenv": "^16.0.1",
+        "esbuild": "^0.14.51",
+        "express": "^4.18.1",
+        "express-rate-limit": "^6.3.0",
+        "ffmpeg-static": "^5.1.0",
+        "hls-parser": "^0.10.7",
+        "ipaddr.js": "2.1.0",
+        "nanoid": "^4.0.2",
+        "node-cache": "^5.1.2",
+        "psl": "1.9.0",
+        "set-cookie-parser": "2.6.0",
+        "undici": "^5.19.1",
+        "url-pattern": "1.0.3",
+        "youtubei.js": "^10.3.0",
+        "zod": "^3.23.8"
+    },
+    "optionalDependencies": {
+        "freebind": "^0.2.2"
+    }
+}

api/src/cobalt.js

@@ -0,0 +1,27 @@
+import "dotenv/config";
+
+import express from "express";
+
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+import { env } from "./config.js"
+import { Bright, Green, Red } from "./misc/console-text.js";
+
+const app = express();
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename).slice(0, -4);
+
+app.disable('x-powered-by');
+
+if (env.apiURL) {
+    const { runAPI } = await import('./core/api.js');
+    runAPI(express, app, __dirname)
+} else {
+    console.log(
+        Red(`cobalt wasn't configured yet or configuration is invalid.\n`)
+        + Bright(`please run the setup script to fix this: `)
+        + Green(`npm run setup`)
+    )
+}

api/src/config.js

@@ -0,0 +1,56 @@
+import { getVersion } from "@imput/version-info";
+import { services } from "./processing/service-config.js";
+
+const version = await getVersion();
+
+const disabledServices = process.env.DISABLED_SERVICES?.split(',') || [];
+const enabledServices = new Set(Object.keys(services).filter(e => {
+    if (!disabledServices.includes(e)) {
+        return e;
+    }
+}));
+
+const env = {
+    apiURL: process.env.API_URL || '',
+    apiPort: process.env.API_PORT || 9000,
+
+    listenAddress: process.env.API_LISTEN_ADDRESS,
+    freebindCIDR: process.platform === 'linux' && process.env.FREEBIND_CIDR,
+
+    corsWildcard: process.env.CORS_WILDCARD !== '0',
+    corsURL: process.env.CORS_URL,
+
+    cookiePath: process.env.COOKIE_PATH,
+
+    rateLimitWindow: (process.env.RATELIMIT_WINDOW && parseInt(process.env.RATELIMIT_WINDOW)) || 60,
+    rateLimitMax: (process.env.RATELIMIT_MAX && parseInt(process.env.RATELIMIT_MAX)) || 20,
+
+    durationLimit: (process.env.DURATION_LIMIT && parseInt(process.env.DURATION_LIMIT)) || 10800,
+    streamLifespan: 90,
+
+    processingPriority: process.platform !== 'win32'
+        && process.env.PROCESSING_PRIORITY
+        && parseInt(process.env.PROCESSING_PRIORITY),
+
+    externalProxy: process.env.API_EXTERNAL_PROXY,
+
+    turnstileSitekey: process.env.TURNSTILE_SITEKEY,
+    turnstileSecret: process.env.TURNSTILE_SECRET,
+    jwtSecret: process.env.JWT_SECRET,
+    jwtLifetime: process.env.JWT_EXPIRY || 120,
+
+    sessionEnabled: process.env.TURNSTILE_SITEKEY
+                        && process.env.TURNSTILE_SECRET
+                        && process.env.JWT_SECRET,
+
+    enabledServices,
+}
+
+const genericUserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36";
+const cobaltUserAgent = `cobalt/${version} (+https://github.com/imputnet/cobalt)`;
+
+export {
+    env,
+    genericUserAgent,
+    cobaltUserAgent,
+}

api/src/core/api.js

@@ -0,0 +1,329 @@
+import cors from "cors";
+import rateLimit from "express-rate-limit";
+import { setGlobalDispatcher, ProxyAgent } from "undici";
+import { getCommit, getBranch, getRemote, getVersion } from "@imput/version-info";
+
+import jwt from "../security/jwt.js";
+import stream from "../stream/stream.js";
+import match from "../processing/match.js";
+
+import { env } from "../config.js";
+import { extract } from "../processing/url.js";
+import { languageCode } from "../misc/utils.js";
+import { Bright, Cyan } from "../misc/console-text.js";
+import { generateHmac, generateSalt } from "../misc/crypto.js";
+import { randomizeCiphers } from "../misc/randomize-ciphers.js";
+import { verifyTurnstileToken } from "../security/turnstile.js";
+import { friendlyServiceName } from "../processing/service-alias.js";
+import { verifyStream, getInternalStream } from "../stream/manage.js";
+import { createResponse, normalizeRequest, getIP } from "../processing/request.js";
+
+const git = {
+    branch: await getBranch(),
+    commit: await getCommit(),
+    remote: await getRemote(),
+}
+
+const version = await getVersion();
+
+const acceptRegex = /^application\/json(; charset=utf-8)?$/;
+
+const ipSalt = generateSalt();
+const corsConfig = env.corsWildcard ? {} : {
+    origin: env.corsURL,
+    optionsSuccessStatus: 200
+}
+
+const fail = (res, code, context) => {
+    const { status, body } = createResponse("error", { code, context });
+    res.status(status).json(body);
+}
+
+export const runAPI = (express, app, __dirname) => {
+    const startTime = new Date();
+    const startTimestamp = startTime.getTime();
+
+    const serverInfo = JSON.stringify({
+        cobalt: {
+            version: version,
+            url: env.apiURL,
+            startTime: `${startTimestamp}`,
+            durationLimit: env.durationLimit,
+            turnstileSitekey: env.sessionEnabled ? env.turnstileSitekey : undefined,
+            services: [...env.enabledServices].map(e => {
+                return friendlyServiceName(e);
+            }),
+        },
+        git,
+    })
+
+    const apiLimiter = rateLimit({
+        windowMs: env.rateLimitWindow * 1000,
+        max: env.rateLimitMax,
+        standardHeaders: true,
+        legacyHeaders: false,
+        keyGenerator: req => {
+            if (req.authorized) {
+                return generateHmac(req.header("Authorization"), ipSalt);
+            }
+            return generateHmac(getIP(req), ipSalt);
+        },
+        handler: (req, res) => {
+            const { status, body } = createResponse("error", {
+                code: "error.api.rate_exceeded",
+                context: {
+                    limit: env.rateLimitWindow
+                }
+            });
+            return res.status(status).json(body);
+        }
+    })
+
+    const apiLimiterStream = rateLimit({
+        windowMs: env.rateLimitWindow * 1000,
+        max: env.rateLimitMax,
+        standardHeaders: true,
+        legacyHeaders: false,
+        keyGenerator: req => generateHmac(getIP(req), ipSalt),
+        handler: (req, res) => {
+            return res.sendStatus(429)
+        }
+    })
+
+    app.set('trust proxy', ['loopback', 'uniquelocal']);
+
+    app.use('/', cors({
+        methods: ['GET', 'POST'],
+        exposedHeaders: [
+            'Ratelimit-Limit',
+            'Ratelimit-Policy',
+            'Ratelimit-Remaining',
+            'Ratelimit-Reset'
+        ],
+        ...corsConfig,
+    }));
+
+    app.post('/', apiLimiter);
+    app.use('/tunnel', apiLimiterStream);
+
+    app.post('/', (req, res, next) => {
+        if (!acceptRegex.test(req.header('Accept'))) {
+            return fail(res, "error.api.header.accept");
+        }
+        if (!acceptRegex.test(req.header('Content-Type'))) {
+            return fail(res, "error.api.header.content_type");
+        }
+        next();
+    });
+
+    app.post('/', (req, res, next) => {
+        if (!env.sessionEnabled) {
+            return next();
+        }
+
+        try {
+            const authorization = req.header("Authorization");
+            if (!authorization) {
+                return fail(res, "error.api.auth.jwt.missing");
+            }
+
+            if (!authorization.startsWith("Bearer ") || authorization.length > 256) {
+                return fail(res, "error.api.auth.jwt.invalid");
+            }
+
+            const verifyJwt = jwt.verify(
+                authorization.split("Bearer ", 2)[1]
+            );
+
+            if (!verifyJwt) {
+                return fail(res, "error.api.auth.jwt.invalid");
+            }
+
+            req.authorized = true;
+        } catch {
+            return fail(res, "error.api.generic");
+        }
+        next();
+    });
+
+    app.use('/', express.json({ limit: 1024 }));
+    app.use('/', (err, _, res, next) => {
+        if (err) {
+            const { status, body } = createResponse("error", {
+                code: "error.api.invalid_body",
+            });
+            return res.status(status).json(body);
+        }
+
+        next();
+    });
+
+    app.post("/session", async (req, res) => {
+        if (!env.sessionEnabled) {
+            return fail(res, "error.api.auth.not_configured")
+        }
+
+        const turnstileResponse = req.header("cf-turnstile-response");
+
+        if (!turnstileResponse) {
+            return fail(res, "error.api.auth.turnstile.missing");
+        }
+
+        const turnstileResult = await verifyTurnstileToken(
+            turnstileResponse,
+            req.ip
+        );
+
+        if (!turnstileResult) {
+            return fail(res, "error.api.auth.turnstile.invalid");
+        }
+
+        try {
+            res.json(jwt.generate());
+        } catch {
+            return fail(res, "error.api.generic");
+        }
+    });
+
+    app.post('/', async (req, res) => {
+        const request = req.body;
+        const lang = languageCode(req);
+
+        if (!request.url) {
+            return fail(res, "error.api.link.missing");
+        }
+
+        if (request.youtubeDubBrowserLang) {
+            request.youtubeDubLang = lang;
+        }
+
+        const { success, data: normalizedRequest } = await normalizeRequest(request);
+        if (!success) {
+            return fail(res, "error.api.invalid_body");
+        }
+
+        const parsed = extract(normalizedRequest.url);
+
+        if (!parsed) {
+            return fail(res, "error.api.link.invalid");
+        }
+        if ("error" in parsed) {
+            let context;
+            if (parsed?.context) {
+                context = parsed.context;
+            }
+            return fail(res, `error.api.${parsed.error}`, context);
+        }
+
+        try {
+            const result = await match({
+                host: parsed.host,
+                patternMatch: parsed.patternMatch,
+                params: normalizedRequest,
+            });
+
+            res.status(result.status).json(result.body);
+        } catch {
+            fail(res, "error.api.generic");
+        }
+    })
+
+    app.get('/tunnel', (req, res) => {
+        const id = String(req.query.id);
+        const exp = String(req.query.exp);
+        const sig = String(req.query.sig);
+        const sec = String(req.query.sec);
+        const iv = String(req.query.iv);
+
+        const checkQueries = id && exp && sig && sec && iv;
+        const checkBaseLength = id.length === 21 && exp.length === 13;
+        const checkSafeLength = sig.length === 43 && sec.length === 43 && iv.length === 22;
+
+        if (!checkQueries || !checkBaseLength || !checkSafeLength) {
+            return res.status(400).end();
+        }
+
+        if (req.query.p) {
+            return res.status(200).end();
+        }
+
+        const streamInfo = verifyStream(id, sig, exp, sec, iv);
+        if (!streamInfo?.service) {
+            return res.status(streamInfo.status).end();
+        }
+
+        if (streamInfo.type === 'proxy') {
+            streamInfo.range = req.headers['range'];
+        }
+
+        return stream(res, streamInfo);
+    })
+
+    app.get('/itunnel', (req, res) => {
+        if (!req.ip.endsWith('127.0.0.1')) {
+            return res.sendStatus(403);
+        }
+
+        if (String(req.query.id).length !== 21) {
+            return res.sendStatus(400);
+        }
+
+        const streamInfo = getInternalStream(req.query.id);
+        if (!streamInfo) {
+            return res.sendStatus(404);
+        }
+
+        streamInfo.headers = new Map([
+            ...(streamInfo.headers || []),
+            ...Object.entries(req.headers)
+        ]);
+
+        return stream(res, { type: 'internal', ...streamInfo });
+    })
+
+    app.get('/', (_, res) => {
+        res.type('json');
+        res.status(200).send(serverInfo);
+    })
+
+    app.get('/favicon.ico', (req, res) => {
+        res.status(404).end();
+    })
+
+    app.get('/*', (req, res) => {
+        res.redirect('/');
+    })
+
+    // handle all express errors
+    app.use((_, __, res, ___) => {
+        return fail(res, "error.api.generic");
+    })
+
+    randomizeCiphers();
+    setInterval(randomizeCiphers, 1000 * 60 * 30); // shuffle ciphers every 30 minutes
+
+    if (env.externalProxy) {
+        if (env.freebindCIDR) {
+            throw new Error('Freebind is not available when external proxy is enabled')
+        }
+
+        setGlobalDispatcher(new ProxyAgent(env.externalProxy))
+    }
+
+    app.listen(env.apiPort, env.listenAddress, () => {
+        console.log(`\n` +
+            Bright(Cyan("cobalt ")) + Bright("API ^ω⁠^") + "\n" +
+
+            "~~~~~~\n" +
+            Bright("version: ") + version + "\n" +
+            Bright("commit: ") + git.commit + "\n" +
+            Bright("branch: ") + git.branch + "\n" +
+            Bright("remote: ") + git.remote + "\n" +
+            Bright("start time: ") + startTime.toUTCString() + "\n" +
+            "~~~~~~\n" +
+
+            Bright("url: ") + Bright(Cyan(env.apiURL)) + "\n" +
+            Bright("port: ") + env.apiPort + "\n"
+        )
+    })
+}

api/src/misc/console-text.js

@@ -0,0 +1,16 @@
+function t(color, tt) {
+    return color + tt + "\x1b[0m"
+}
+
+export function Bright(tt) {
+    return t("\x1b[1m", tt)
+}
+export function Red(tt) {
+    return t("\x1b[31m", tt)
+}
+export function Green(tt) {
+    return t("\x1b[32m", tt)
+}
+export function Cyan(tt) {
+    return t("\x1b[36m", tt)
+}

api/src/misc/crypto.js

@@ -0,0 +1,27 @@
+import { createHmac, createCipheriv, createDecipheriv, randomBytes } from "crypto";
+
+const algorithm = "aes256";
+
+export function generateSalt() {
+    return randomBytes(64).toString('hex');
+}
+
+export function generateHmac(str, salt) {
+    return createHmac("sha256", salt).update(str).digest("base64url");
+}
+
+export function encryptStream(plaintext, iv, secret) {
+    const buff = Buffer.from(JSON.stringify(plaintext));
+    const key = Buffer.from(secret, "base64url");
+    const cipher = createCipheriv(algorithm, key, Buffer.from(iv, "base64url"));
+
+    return Buffer.concat([ cipher.update(buff), cipher.final() ])
+}
+
+export function decryptStream(ciphertext, iv, secret) {
+    const buff = Buffer.from(ciphertext);
+    const key = Buffer.from(secret, "base64url");
+    const decipher = createDecipheriv(algorithm, key, Buffer.from(iv, "base64url"));
+
+    return Buffer.concat([ decipher.update(buff), decipher.final() ])
+}

api/src/misc/load-from-fs.js

@@ -0,0 +1,20 @@
+import * as fs from "fs";
+import { join, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = join(
+    dirname(fileURLToPath(import.meta.url)),
+    '../../'
+);
+
+export function loadFile(path) {
+    return fs.readFileSync(join(root, path), 'utf-8')
+}
+
+export function loadJSON(path) {
+    try {
+        return JSON.parse(loadFile(path))
+    } catch {
+        return false
+    }
+}

api/src/misc/randomize-ciphers.js

@@ -0,0 +1,28 @@
+import tls from 'node:tls';
+import { randomBytes } from 'node:crypto';
+
+const ORIGINAL_CIPHERS = tls.DEFAULT_CIPHERS;
+
+// How many ciphers from the top of the list to shuffle.
+// The remaining ciphers are left in the original order.
+const TOP_N_SHUFFLE = 8;
+
+// Modified variation of https://stackoverflow.com/a/12646864
+const shuffleArray = (array) => {
+    for (let i = array.length - 1; i > 0; i--) {
+        const j = randomBytes(4).readUint32LE() % array.length;
+        [array[i], array[j]] = [array[j], array[i]];
+    }
+
+    return array;
+}
+
+export const randomizeCiphers = () => {
+    do {
+        const cipherList = ORIGINAL_CIPHERS.split(':');
+        const shuffled = shuffleArray(cipherList.slice(0, TOP_N_SHUFFLE));
+        const retained = cipherList.slice(TOP_N_SHUFFLE);
+
+        tls.DEFAULT_CIPHERS = [ ...shuffled, ...retained ].join(':');
+    } while (tls.DEFAULT_CIPHERS === ORIGINAL_CIPHERS);
+}

api/src/misc/run-test.js

@@ -0,0 +1,44 @@
+import { normalizeRequest } from "../processing/request.js";
+import match from "../processing/match.js";
+import { extract } from "../processing/url.js";
+
+export async function runTest(url, params, expect) {
+    const { success, data: normalized } = await normalizeRequest({ url, ...params });
+    if (!success) {
+        throw "invalid request";
+    }
+
+    const parsed = extract(normalized.url);
+    if (parsed === null) {
+        throw `invalid url: ${normalized.url}`;
+    }
+
+    const result = await match({
+        host: parsed.host,
+        patternMatch: parsed.patternMatch,
+        params: normalized,
+    });
+
+    let error = [];
+    if (expect.status !== result.body.status) {
+        const detail = `${expect.status} (expected) != ${result.body.status} (actual)`;
+        error.push(`status mismatch: ${detail}`);
+    }
+
+    if (expect.code !== result.status) {
+        const detail = `${expect.code} (expected) != ${result.status} (actual)`;
+        error.push(`status code mismatch: ${detail}`);
+    }
+
+    if (error.length) {
+        if (result.body.text) {
+            error.push(`error message: ${result.body.text}`);
+        }
+
+        throw error.join('\n');
+    }
+
+    if (result.body.status === 'tunnel') {
+        // TODO: stream testing
+    }
+}

api/src/misc/utils.js

@@ -0,0 +1,78 @@
+const forbiddenCharsString = ['}', '{', '%', '>', '<', '^', ';', '`', '$', '"', "@", '='];
+
+export function metadataManager(obj) {
+    const keys = Object.keys(obj);
+    const tags = [
+        "album",
+        "copyright",
+        "title",
+        "artist",
+        "track",
+        "date"
+    ]
+    let commands = []
+
+    for (const i in keys) {
+        if (tags.includes(keys[i]))
+            commands.push('-metadata', `${keys[i]}=${obj[keys[i]]}`)
+        }
+    return commands;
+}
+
+export function cleanString(string) {
+    for (const i in forbiddenCharsString) {
+        string = string.replaceAll("/", "_")
+                       .replaceAll(forbiddenCharsString[i], '')
+    }
+    return string;
+}
+export function verifyLanguageCode(code) {
+    const langCode = String(code.slice(0, 2).toLowerCase());
+    if (RegExp(/[a-z]{2}/).test(code)) {
+        return langCode
+    }
+    return "en"
+}
+export function languageCode(req) {
+    if (req.header('Accept-Language')) {
+        return verifyLanguageCode(req.header('Accept-Language'))
+    }
+    return "en"
+}
+export function cleanHTML(html) {
+    let clean = html.replace(/ {4}/g, '');
+    clean = clean.replace(/\n/g, '');
+    return clean
+}
+
+export function getRedirectingURL(url) {
+    return fetch(url, { redirect: 'manual' }).then((r) => {
+        if ([301, 302, 303].includes(r.status) && r.headers.has('location'))
+            return r.headers.get('location');
+    }).catch(() => null);
+}
+
+export function merge(a, b) {
+    for (const k of Object.keys(b)) {
+        if (Array.isArray(b[k])) {
+            a[k] = [...(a[k] ?? []), ...b[k]];
+        } else if (typeof b[k] === 'object') {
+            a[k] = merge(a[k], b[k]);
+        } else {
+            a[k] = b[k];
+        }
+    }
+
+    return a;
+}
+
+export function splitFilenameExtension(filename) {
+    const parts = filename.split('.');
+    const ext = parts.pop();
+
+    if (!parts.length) {
+        return [ ext, "" ]
+    } else {
+        return [ parts.join('.'), ext ]
+    }
+}

api/src/processing/cookie/cookie.js

@@ -0,0 +1,37 @@
+import { strict as assert } from 'node:assert';
+
+export default class Cookie {
+    constructor(input) {
+        assert(typeof input === 'object');
+        this._values = {};
+        this.set(input)
+    }
+    set(values) {
+        Object.entries(values).forEach(
+            ([ key, value ]) => this._values[key] = value
+        )
+    }
+    unset(keys) {
+        for (const key of keys) delete this._values[key]
+    }
+    static fromString(str) {
+        const obj = {};
+
+        str.split('; ').forEach(cookie => {
+            const key = cookie.split('=')[0];
+            const value = cookie.split('=').splice(1).join('=');
+            obj[key] = value
+        })
+
+        return new Cookie(obj)
+    }
+    toString() {
+        return Object.entries(this._values).map(([ name, value ]) => `${name}=${value}`).join('; ')
+    }
+    toJSON() {
+        return this.toString()
+    }
+    values() {
+        return Object.freeze({ ...this._values })
+    }
+}

api/src/processing/cookie/manager.js

@@ -0,0 +1,66 @@
+import Cookie from './cookie.js';
+import { readFile, writeFile } from 'fs/promises';
+import { parse as parseSetCookie, splitCookiesString } from 'set-cookie-parser';
+import { env } from '../../config.js';
+
+const WRITE_INTERVAL = 60000,
+      cookiePath = env.cookiePath,
+      COUNTER = Symbol('counter');
+
+let cookies = {}, dirty = false, intervalId;
+
+const setup = async () => {
+    try {
+        if (!cookiePath) return;
+
+        cookies = await readFile(cookiePath, 'utf8');
+        cookies = JSON.parse(cookies);
+        intervalId = setInterval(writeChanges, WRITE_INTERVAL)
+    } catch { /* no cookies for you */ }
+}
+
+setup();
+
+function writeChanges() {
+    if (!dirty) return;
+    dirty = false;
+
+    writeFile(cookiePath, JSON.stringify(cookies, null, 4)).catch(() => {
+        clearInterval(intervalId)
+    })
+}
+
+export function getCookie(service) {
+    if (!cookies[service] || !cookies[service].length) return;
+
+    let n;
+    if (cookies[service][COUNTER] === undefined) {
+        n = cookies[service][COUNTER] = 0
+    } else {
+        ++cookies[service][COUNTER]
+        n = (cookies[service][COUNTER] %= cookies[service].length)
+    }
+
+    const cookie = cookies[service][n];
+    if (typeof cookie === 'string') cookies[service][n] = Cookie.fromString(cookie);
+
+    return cookies[service][n]
+}
+
+export function updateCookie(cookie, headers) {
+    if (!cookie) return;
+
+    const parsed = parseSetCookie(
+        splitCookiesString(headers.get('set-cookie')),
+        { decodeValues: false }
+    ), values = {}
+
+    cookie.unset(parsed.filter(c => c.expires < new Date()).map(c => c.name));
+    parsed.filter(c => !c.expires || c.expires > new Date()).forEach(c => values[c.name] = c.value);
+    updateCookieValues(cookie, values);
+}
+
+export function updateCookieValues(cookie, values) {
+    cookie.set(values);
+    if (Object.keys(values).length) dirty = true
+}

api/src/processing/create-filename.js

@@ -0,0 +1,56 @@
+export default (f, style, isAudioOnly, isAudioMuted) => {
+    let filename = '';
+
+    let infoBase = [f.service, f.id];
+    let classicTags = [...infoBase];
+    let basicTags = [];
+
+    const title = `${f.title} - ${f.author}`;
+
+    if (f.resolution) {
+        classicTags.push(f.resolution);
+    }
+
+    if (f.qualityLabel) {
+        basicTags.push(f.qualityLabel);
+    }
+
+    if (f.youtubeFormat) {
+        classicTags.push(f.youtubeFormat);
+        basicTags.push(f.youtubeFormat);
+    }
+
+    if (isAudioMuted) {
+        classicTags.push("mute");
+        basicTags.push("mute");
+    } else if (f.youtubeDubName) {
+        classicTags.push(f.youtubeDubName);
+        basicTags.push(f.youtubeDubName);
+    }
+
+    switch (style) {
+        default:
+        case "classic":
+            if (isAudioOnly) {
+                if (f.youtubeDubName) {
+                    infoBase.push(f.youtubeDubName);
+                }
+                return `${infoBase.join("_")}_audio`;
+            }
+            filename = classicTags.join("_");
+            break;
+        case "basic":
+            if (isAudioOnly) return title;
+            filename = `${title} (${basicTags.join(", ")})`;
+            break;
+        case "pretty":
+            if (isAudioOnly) return `${title} (${infoBase[0]})`;
+            filename = `${title} (${[...basicTags, infoBase[0]].join(", ")})`;
+            break;
+        case "nerdy":
+            if (isAudioOnly) return `${title} (${infoBase.join(", ")})`;
+            filename = `${title} (${basicTags.concat(infoBase).join(", ")})`;
+            break;
+    }
+    return `${filename}.${f.extension}`;
+}

api/src/processing/match-action.js

@@ -0,0 +1,212 @@
+import createFilename from "./create-filename.js";
+
+import { createResponse } from "./request.js";
+import { audioIgnore } from "./service-config.js";
+import { createStream } from "../stream/manage.js";
+import { splitFilenameExtension } from "../misc/utils.js";
+
+export default function({ r, host, audioFormat, isAudioOnly, isAudioMuted, disableMetadata, filenameStyle, twitterGif, requestIP, audioBitrate, alwaysProxy }) {
+    let action,
+        responseType = "tunnel",
+        defaultParams = {
+            u: r.urls,
+            headers: r.headers,
+            service: host,
+            filename: r.filenameAttributes ?
+                    createFilename(r.filenameAttributes, filenameStyle, isAudioOnly, isAudioMuted) : r.filename,
+            fileMetadata: !disableMetadata ? r.fileMetadata : false,
+            requestIP
+        },
+        params = {};
+
+    if (r.isPhoto) action = "photo";
+    else if (r.picker) action = "picker"
+    else if (r.isGif && twitterGif) action = "gif";
+    else if (isAudioOnly) action = "audio";
+    else if (isAudioMuted) action = "muteVideo";
+    else if (r.isM3U8) action = "m3u8";
+    else action = "video";
+
+    if (action === "picker" || action === "audio") {
+        if (!r.filenameAttributes) defaultParams.filename = r.audioFilename;
+        defaultParams.audioFormat = audioFormat;
+    }
+
+    if (action === "muteVideo" && isAudioMuted && !r.filenameAttributes) {
+        const [ name, ext ] = splitFilenameExtension(r.filename);
+        defaultParams.filename = `${name}_mute.${ext}`;
+    } else if (action === "gif") {
+        const [ name ] = splitFilenameExtension(r.filename);
+        defaultParams.filename = `${name}.gif`;
+    }
+
+    switch (action) {
+        default:
+            return createResponse("error", {
+                code: "error.api.fetch.empty"
+            });
+
+        case "photo":
+            responseType = "redirect";
+            break;
+
+        case "gif":
+            params = { type: "gif" };
+            break;
+
+        case "m3u8":
+            params = {
+                type: Array.isArray(r.urls) ? "merge" : "remux"
+            }
+            break;
+
+        case "muteVideo":
+            let muteType = "mute";
+            if (Array.isArray(r.urls) && !r.isM3U8) {
+                muteType = "proxy";
+            }
+            params = {
+                type: muteType,
+                u: Array.isArray(r.urls) ? r.urls[0] : r.urls
+            }
+            if (host === "reddit" && r.typeId === "redirect") {
+                responseType = "redirect";
+            }
+            break;
+
+        case "picker":
+            responseType = "picker";
+            switch (host) {
+                case "instagram":
+                case "twitter":
+                case "snapchat":
+                case "bsky":
+                    params = { picker: r.picker };
+                    break;
+
+                case "tiktok":
+                    let audioStreamType = "audio";
+                    if (r.bestAudio === "mp3" && audioFormat === "best") {
+                        audioFormat = "mp3";
+                        audioStreamType = "proxy"
+                    }
+                    params = {
+                        picker: r.picker,
+                        u: createStream({
+                            service: "tiktok",
+                            type: audioStreamType,
+                            u: r.urls,
+                            headers: r.headers,
+                            filename: r.audioFilename,
+                            isAudioOnly: true,
+                            audioFormat,
+                        })
+                    }
+                    break;
+            }
+            break;
+
+        case "video":
+            switch (host) {
+                case "bilibili":
+                    params = { type: "merge" };
+                    break;
+
+                case "youtube":
+                    params = { type: r.type };
+                    break;
+
+                case "reddit":
+                    responseType = r.typeId;
+                    params = { type: r.type };
+                    break;
+
+                case "vimeo":
+                    if (Array.isArray(r.urls)) {
+                        params = { type: "merge" }
+                    } else {
+                        responseType = "redirect";
+                    }
+                    break;
+
+                case "twitter":
+                    if (r.type === "remux") {
+                        params = { type: r.type };
+                    } else {
+                        responseType = "redirect";
+                    }
+                    break;
+
+                case "vk":
+                case "tiktok":
+                    params = { type: "proxy" };
+                    break;
+
+                case "facebook":
+                case "vine":
+                case "instagram":
+                case "tumblr":
+                case "pinterest":
+                case "streamable":
+                case "snapchat":
+                case "loom":
+                case "twitch":
+                    responseType = "redirect";
+                    break;
+            }
+            break;
+
+        case "audio":
+            if (audioIgnore.includes(host) || (host === "reddit" && r.typeId === "redirect")) {
+                return createResponse("error", {
+                    code: "error.api.fetch.empty"
+                })
+            }
+
+            let processType = "audio";
+            let copy = false;
+
+            if (audioFormat === "best") {
+                const serviceBestAudio = r.bestAudio;
+
+                if (serviceBestAudio) {
+                    audioFormat = serviceBestAudio;
+                    processType = "proxy";
+
+                    if (host === "soundcloud") {
+                        processType = "audio";
+                        copy = true;
+                    }
+                } else {
+                    audioFormat = "m4a";
+                    copy = true;
+                }
+            }
+
+            if (r.isM3U8 || host === "vimeo") {
+                copy = false;
+                processType = "audio";
+            }
+
+            params = {
+                type: processType,
+                u: Array.isArray(r.urls) ? r.urls[1] : r.urls,
+
+                audioBitrate,
+                audioCopy: copy,
+                audioFormat,
+            }
+            break;
+    }
+
+    if (defaultParams.filename && (action === "picker" || action === "audio")) {
+        defaultParams.filename += `.${audioFormat}`;
+    }
+
+    if (alwaysProxy && responseType === "redirect") {
+        responseType = "tunnel";
+        params.type = "proxy";
+    }
+
+    return createResponse(responseType, {...defaultParams, ...params})
+}

api/src/processing/match.js

@@ -0,0 +1,310 @@
+import { strict as assert } from "node:assert";
+
+import { env } from "../config.js";
+import { createResponse } from "../processing/request.js";
+
+import { testers } from "./service-patterns.js";
+import matchAction from "./match-action.js";
+
+import { friendlyServiceName } from "./service-alias.js";
+
+import bilibili from "./services/bilibili.js";
+import reddit from "./services/reddit.js";
+import twitter from "./services/twitter.js";
+import youtube from "./services/youtube.js";
+import vk from "./services/vk.js";
+import ok from "./services/ok.js";
+import tiktok from "./services/tiktok.js";
+import tumblr from "./services/tumblr.js";
+import vimeo from "./services/vimeo.js";
+import soundcloud from "./services/soundcloud.js";
+import instagram from "./services/instagram.js";
+import vine from "./services/vine.js";
+import pinterest from "./services/pinterest.js";
+import streamable from "./services/streamable.js";
+import twitch from "./services/twitch.js";
+import rutube from "./services/rutube.js";
+import dailymotion from "./services/dailymotion.js";
+import snapchat from "./services/snapchat.js";
+import loom from "./services/loom.js";
+import facebook from "./services/facebook.js";
+import bluesky from "./services/bluesky.js";
+
+let freebind;
+
+export default async function({ host, patternMatch, params }) {
+    const { url } = params;
+    assert(url instanceof URL);
+    let dispatcher, requestIP;
+
+    if (env.freebindCIDR) {
+        if (!freebind) {
+            freebind = await import('freebind');
+        }
+
+        requestIP = freebind.ip.random(env.freebindCIDR);
+        dispatcher = freebind.dispatcherFromIP(requestIP, { strict: false });
+    }
+
+    try {
+        let r,
+            isAudioOnly = params.downloadMode === "audio",
+            isAudioMuted = params.downloadMode === "mute";
+
+        if (!testers[host]) {
+            return createResponse("error", {
+                code: "error.api.service.unsupported"
+            });
+        }
+        if (!(testers[host](patternMatch))) {
+            return createResponse("error", {
+                code: "error.api.link.unsupported",
+                context: {
+                    service: friendlyServiceName(host),
+                }
+            });
+        }
+
+        switch (host) {
+            case "twitter":
+                r = await twitter({
+                    id: patternMatch.id,
+                    index: patternMatch.index - 1,
+                    toGif: !!params.twitterGif,
+                    alwaysProxy: params.alwaysProxy,
+                    dispatcher
+                });
+                break;
+
+            case "vk":
+                r = await vk({
+                    userId: patternMatch.userId,
+                    videoId: patternMatch.videoId,
+                    quality: params.videoQuality
+                });
+                break;
+
+            case "ok":
+                r = await ok({
+                    id: patternMatch.id,
+                    quality: params.videoQuality
+                });
+                break;
+
+            case "bilibili":
+                r = await bilibili(patternMatch);
+                break;
+
+            case "youtube":
+                let fetchInfo = {
+                    id: patternMatch.id.slice(0, 11),
+                    quality: params.videoQuality,
+                    format: params.youtubeVideoCodec,
+                    isAudioOnly,
+                    isAudioMuted,
+                    dubLang: params.youtubeDubLang,
+                    dispatcher
+                }
+
+                if (url.hostname === "music.youtube.com" || isAudioOnly) {
+                    fetchInfo.quality = "max";
+                    fetchInfo.format = "vp9";
+                    fetchInfo.isAudioOnly = true;
+                    fetchInfo.isAudioMuted = false;
+                }
+
+                r = await youtube(fetchInfo);
+                break;
+
+            case "reddit":
+                r = await reddit({
+                    sub: patternMatch.sub,
+                    id: patternMatch.id,
+                    user: patternMatch.user
+                });
+                break;
+
+            case "tiktok":
+                r = await tiktok({
+                    postId: patternMatch.postId,
+                    id: patternMatch.id,
+                    fullAudio: params.tiktokFullAudio,
+                    isAudioOnly,
+                    h265: params.tiktokH265,
+                    alwaysProxy: params.alwaysProxy,
+                });
+                break;
+
+            case "tumblr":
+                r = await tumblr({
+                    id: patternMatch.id,
+                    user: patternMatch.user,
+                    url
+                });
+                break;
+
+            case "vimeo":
+                r = await vimeo({
+                    id: patternMatch.id.slice(0, 11),
+                    password: patternMatch.password,
+                    quality: params.videoQuality,
+                    isAudioOnly,
+                });
+                break;
+
+            case "soundcloud":
+                isAudioOnly = true;
+                isAudioMuted = false;
+                r = await soundcloud({
+                    url,
+                    author: patternMatch.author,
+                    song: patternMatch.song,
+                    format: params.audioFormat,
+                    shortLink: patternMatch.shortLink || false,
+                    accessKey: patternMatch.accessKey || false
+                });
+                break;
+
+            case "instagram":
+                r = await instagram({
+                    ...patternMatch,
+                    quality: params.videoQuality,
+                    alwaysProxy: params.alwaysProxy,
+                    dispatcher
+                })
+                break;
+
+            case "vine":
+                r = await vine({
+                    id: patternMatch.id
+                });
+                break;
+
+            case "pinterest":
+                r = await pinterest({
+                    id: patternMatch.id,
+                    shortLink: patternMatch.shortLink || false
+                });
+                break;
+
+            case "streamable":
+                r = await streamable({
+                    id: patternMatch.id,
+                    quality: params.videoQuality,
+                    isAudioOnly,
+                });
+                break;
+
+            case "twitch":
+                r = await twitch({
+                    clipId: patternMatch.clip || false,
+                    quality: params.videoQuality,
+                    isAudioOnly,
+                });
+                break;
+
+            case "rutube":
+                r = await rutube({
+                    id: patternMatch.id,
+                    yappyId: patternMatch.yappyId,
+                    key: patternMatch.key,
+                    quality: params.videoQuality,
+                    isAudioOnly,
+                });
+                break;
+
+            case "dailymotion":
+                r = await dailymotion(patternMatch);
+                break;
+
+            case "snapchat":
+                r = await snapchat({
+                    ...patternMatch,
+                    alwaysProxy: params.alwaysProxy,
+                });
+                break;
+
+            case "loom":
+                r = await loom({
+                    id: patternMatch.id
+                });
+                break;
+
+            case "facebook":
+                r = await facebook({
+                    ...patternMatch
+                });
+                break;
+
+            case "bsky":
+                r = await bluesky({
+                    ...patternMatch,
+                    alwaysProxy: params.alwaysProxy
+                });
+                break;
+
+            default:
+                return createResponse("error", {
+                    code: "error.api.service.unsupported"
+                });
+        }
+
+        if (r.isAudioOnly) {
+            isAudioOnly = true;
+            isAudioMuted = false;
+        }
+
+        if (r.error && r.critical) {
+            return createResponse("critical", {
+                code: `error.api.${r.error}`,
+            })
+        }
+
+        if (r.error) {
+            let context;
+            switch(r.error) {
+                case "content.too_long":
+                    context = {
+                        limit: env.durationLimit / 60,
+                    }
+                    break;
+
+                case "fetch.fail":
+                case "fetch.rate":
+                case "fetch.critical":
+                case "link.unsupported":
+                case "content.video.unavailable":
+                    context = {
+                        service: friendlyServiceName(host),
+                    }
+                    break;
+            }
+
+            return createResponse("error", {
+                code: `error.api.${r.error}`,
+                context,
+            })
+        }
+
+        return matchAction({
+            r,
+            host,
+            audioFormat: params.audioFormat,
+            isAudioOnly,
+            isAudioMuted,
+            disableMetadata: params.disableMetadata,
+            filenameStyle: params.filenameStyle,
+            twitterGif: params.twitterGif,
+            requestIP,
+            audioBitrate: params.audioBitrate,
+            alwaysProxy: params.alwaysProxy,
+        })
+    } catch {
+        return createResponse("error", {
+            code: "error.api.fetch.critical",
+            context: {
+                service: friendlyServiceName(host),
+            }
+        })
+    }
+}

api/src/processing/request.js

@@ -0,0 +1,97 @@
+import ipaddr from "ipaddr.js";
+
+import { createStream } from "../stream/manage.js";
+import { apiSchema } from "./schema.js";
+
+export function createResponse(responseType, responseData) {
+    const internalError = (code) => {
+        return {
+            status: 500,
+            body: {
+                status: "error",
+                error: {
+                    code: code || "error.api.fetch.critical",
+                },
+                critical: true
+            }
+        }
+    }
+
+    try {
+        let status = 200,
+            response = {};
+
+        if (responseType === "error") {
+            status = 400;
+        }
+
+        switch (responseType) {
+            case "error":
+                response = {
+                    error: {
+                        code: responseData?.code,
+                        context: responseData?.context,
+                    }
+                }
+                break;
+
+            case "redirect":
+                response = {
+                    url: responseData?.u,
+                    filename: responseData?.filename
+                }
+                break;
+
+            case "tunnel":
+                response = {
+                    url: createStream(responseData),
+                    filename: responseData?.filename
+                }
+                break;
+
+            case "picker":
+                response = {
+                    picker: responseData?.picker,
+                    audio: responseData?.u,
+                    audioFilename: responseData?.filename
+                }
+                break;
+
+            case "critical":
+                return internalError(responseData?.code);
+
+            default:
+                throw "unreachable"
+        }
+
+        return {
+            status,
+            body: {
+                status: responseType,
+                ...response
+            }
+        }
+    } catch {
+        return internalError()
+    }
+}
+
+export function normalizeRequest(request) {
+    return apiSchema.safeParseAsync(request).catch(() => (
+        { success: false }
+    ));
+}
+
+export function getIP(req) {
+    const strippedIP = req.ip.replace(/^::ffff:/, '');
+    const ip = ipaddr.parse(strippedIP);
+    if (ip.kind() === 'ipv4') {
+        return strippedIP;
+    }
+
+    const prefix = 56;
+    const v6Bytes = ip.toByteArray();
+          v6Bytes.fill(0, prefix / 8);
+
+    return ipaddr.fromByteArray(v6Bytes).toString();
+}

api/src/processing/schema.js

@@ -0,0 +1,47 @@
+import { z } from "zod";
+
+import { normalizeURL } from "./url.js";
+import { verifyLanguageCode } from "../misc/utils.js";
+
+export const apiSchema = z.object({
+    url: z.string()
+          .min(1)
+          .transform(url => normalizeURL(url)),
+
+    audioBitrate: z.enum(
+        ["320", "256", "128", "96", "64", "8"]
+    ).default("128"),
+
+    audioFormat: z.enum(
+        ["best", "mp3", "ogg", "wav", "opus"]
+    ).default("mp3"),
+
+    downloadMode: z.enum(
+        ["auto", "audio", "mute"]
+    ).default("auto"),
+
+    filenameStyle: z.enum(
+        ["classic", "pretty", "basic", "nerdy"]
+    ).default("classic"),
+
+    youtubeVideoCodec: z.enum(
+        ["h264", "av1", "vp9"]
+    ).default("h264"),
+
+    videoQuality: z.enum(
+        ["max", "4320", "2160", "1440", "1080", "720", "480", "360", "240", "144"]
+    ).default("1080"),
+
+    youtubeDubLang: z.string()
+                     .length(2)
+                     .transform(verifyLanguageCode)
+                     .optional(),
+
+    alwaysProxy: z.boolean().default(false),
+    disableMetadata: z.boolean().default(false),
+    tiktokFullAudio: z.boolean().default(false),
+    tiktokH265: z.boolean().default(false),
+    twitterGif: z.boolean().default(true),
+    youtubeDubBrowserLang: z.boolean().default(false),
+})
+.strict();

api/src/processing/service-alias.js

@@ -0,0 +1,10 @@
+const friendlyNames = {
+    bsky: "bluesky",
+}
+
+export const friendlyServiceName = (service) => {
+    if (service in friendlyNames) {
+        return friendlyNames[service];
+    }
+    return service;
+}

api/src/processing/service-config.js

@@ -0,0 +1,182 @@
+import UrlPattern from "url-pattern";
+
+export const audioIgnore = ["vk", "ok", "loom"];
+export const hlsExceptions = ["dailymotion", "vimeo", "rutube", "bsky"];
+
+export const services = {
+    bilibili: {
+        patterns: [
+            "video/:comId",
+            "_shortLink/:comShortLink",
+            "_tv/:lang/video/:tvId",
+            "_tv/video/:tvId"
+        ],
+        subdomains: ["m"],
+    },
+    bsky: {
+        patterns: [
+            "profile/:user/post/:post"
+        ],
+        tld: "app",
+    },
+    dailymotion: {
+        patterns: ["video/:id"],
+    },
+    facebook: {
+        patterns: [
+            "_shortLink/:shortLink",
+            ":username/videos/:caption/:id",
+            ":username/videos/:id",
+            "reel/:id",
+            "share/:shareType/:id"
+        ],
+        subdomains: ["web"],
+        altDomains: ["fb.watch"],
+    },
+    instagram: {
+        patterns: [
+            "reels/:postId",
+            ":username/reel/:postId",
+            "reel/:postId",
+            "p/:postId",
+            ":username/p/:postId",
+            "tv/:postId",
+            "stories/:username/:storyId"
+        ],
+        altDomains: ["ddinstagram.com"],
+    },
+    loom: {
+        patterns: ["share/:id"],
+    },
+    ok: {
+        patterns: [
+            "video/:id",
+            "videoembed/:id"
+        ],
+        tld: "ru",
+    },
+    pinterest: {
+        patterns: [
+            "pin/:id",
+            "pin/:id/:garbage",
+            "url_shortener/:shortLink"
+        ],
+    },
+    reddit: {
+        patterns: [
+            "r/:sub/comments/:id/:title",
+            "user/:user/comments/:id/:title"
+        ],
+        subdomains: "*",
+    },
+    rutube: {
+        patterns: [
+            "video/:id",
+            "play/embed/:id",
+            "shorts/:id",
+            "yappy/:yappyId",
+            "video/private/:id?p=:key",
+            "video/private/:id"
+        ],
+        tld: "ru",
+    },
+    snapchat: {
+        patterns: [
+            ":shortLink",
+            "spotlight/:spotlightId",
+            "add/:username/:storyId",
+            "u/:username/:storyId",
+            "add/:username",
+            "u/:username",
+            "t/:shortLink",
+        ],
+        subdomains: ["t", "story"],
+    },
+    soundcloud: {
+        patterns: [
+            ":author/:song/s-:accessKey",
+            ":author/:song",
+            ":shortLink"
+        ],
+        subdomains: ["on", "m"],
+    },
+    streamable: {
+        patterns: [
+            ":id",
+            "o/:id",
+            "e/:id",
+            "s/:id"
+        ],
+    },
+    tiktok: {
+        patterns: [
+            ":user/video/:postId",
+            ":id",
+            "t/:id",
+            ":user/photo/:postId",
+            "v/:id.html"
+        ],
+        subdomains: ["vt", "vm", "m"],
+    },
+    tumblr: {
+        patterns: [
+            "post/:id",
+            "blog/view/:user/:id",
+            ":user/:id",
+            ":user/:id/:trackingId"
+        ],
+        subdomains: "*",
+    },
+    twitch: {
+        patterns: [":channel/clip/:clip"],
+        tld: "tv",
+    },
+    twitter: {
+        patterns: [
+            ":user/status/:id",
+            ":user/status/:id/video/:index",
+            ":user/status/:id/photo/:index",
+            ":user/status/:id/mediaviewer",
+            ":user/status/:id/mediaViewer"
+        ],
+        subdomains: ["mobile"],
+        altDomains: ["x.com", "vxtwitter.com", "fixvx.com"],
+    },
+    vine: {
+        patterns: ["v/:id"],
+        tld: "co",
+    },
+    vimeo: {
+        patterns: [
+            ":id",
+            "video/:id",
+            ":id/:password",
+            "/channels/:user/:id"
+        ],
+        subdomains: ["player"],
+    },
+    vk: {
+        patterns: [
+            "video:userId_:videoId",
+            "clip:userId_:videoId",
+            "clips:duplicate?z=clip:userId_:videoId"
+        ],
+        subdomains: ["m"],
+    },
+    youtube: {
+        patterns: [
+            "watch?v=:id",
+            "embed/:id",
+            "watch/:id"
+        ],
+        subdomains: ["music", "m"],
+    }
+}
+
+Object.values(services).forEach(service => {
+    service.patterns = service.patterns.map(
+        pattern => new UrlPattern(pattern, {
+            segmentValueCharset: UrlPattern.defaultOptions.segmentValueCharset + '@\\.:'
+        })
+    )
+})

api/src/processing/service-patterns.js

@@ -0,0 +1,76 @@
+export const testers = {
+    "bilibili": pattern =>
+        pattern.comId?.length <= 12 || pattern.comShortLink?.length <= 16
+        || pattern.tvId?.length <= 24,
+
+    "dailymotion": pattern => pattern.id?.length <= 32,
+
+    "instagram": pattern =>
+        pattern.postId?.length <= 12
+        || (pattern.username?.length <= 30 && pattern.storyId?.length <= 24),
+
+    "loom": pattern =>
+        pattern.id?.length <= 32,
+
+    "ok": pattern =>
+        pattern.id?.length <= 16,
+
+    "pinterest": pattern =>
+        pattern.id?.length <= 128 || pattern.shortLink?.length <= 32,
+
+    "reddit": pattern =>
+        (pattern.sub?.length <= 22 && pattern.id?.length <= 10)
+        || (pattern.user?.length <= 22 && pattern.id?.length <= 10),
+
+    "rutube": pattern =>
+        (pattern.id?.length === 32 && pattern.key?.length <= 32) ||
+        pattern.id?.length === 32 || pattern.yappyId?.length === 32,
+
+    "soundcloud": pattern =>
+        (pattern.author?.length <= 255 && pattern.song?.length <= 255)
+        || pattern.shortLink?.length <= 32,
+
+    "snapchat": pattern =>
+        (pattern.username?.length <= 32 && (!pattern.storyId || pattern.storyId?.length <= 255))
+        || pattern.spotlightId?.length <= 255
+        || pattern.shortLink?.length <= 16,
+
+    "streamable": pattern =>
+        pattern.id?.length === 6,
+
+    "tiktok": pattern =>
+        pattern.postId?.length <= 21 || pattern.id?.length <= 13,
+
+    "tumblr": pattern =>
+        pattern.id?.length < 21
+        || (pattern.id?.length < 21 && pattern.user?.length <= 32),
+
+    "twitch": pattern =>
+        pattern.channel && pattern.clip?.length <= 100,
+
+    "twitter": pattern =>
+        pattern.id?.length < 20,
+
+    "vimeo": pattern =>
+        pattern.id?.length <= 11
+        && (!pattern.password || pattern.password.length < 16),
+
+    "vine": pattern =>
+        pattern.id?.length <= 12,
+
+    "vk": pattern =>
+        pattern.userId?.length <= 10 && pattern.videoId?.length <= 10,
+
+    "youtube": pattern =>
+        pattern.id?.length <= 11,
+
+    "facebook": pattern =>
+        pattern.shortLink?.length <= 11
+        || pattern.username?.length <= 30
+        || pattern.caption?.length <= 255
+        || pattern.id?.length <= 20 && !pattern.shareType
+        || pattern.id?.length <= 20 && pattern.shareType?.length === 1,
+
+    "bsky": pattern =>
+        pattern.user?.length <= 128 && pattern.post?.length <= 128,
+}

api/src/processing/services/bilibili.js

@@ -0,0 +1,112 @@
+import { genericUserAgent, env } from "../../config.js";
+
+// TO-DO: higher quality downloads (currently requires an account)
+
+function com_resolveShortlink(shortId) {
+    return fetch(`https://b23.tv/${shortId}`, { redirect: 'manual' })
+            .then(r => r.status > 300 && r.status < 400 && r.headers.get('location'))
+            .then(url => {
+                if (!url) return;
+                const path = new URL(url).pathname;
+                if (path.startsWith('/video/'))
+                    return path.split('/')[2];
+            })
+            .catch(() => {})
+}
+
+function getBest(content) {
+    return content?.filter(v => v.baseUrl || v.url)
+                .map(v => (v.baseUrl = v.baseUrl || v.url, v))
+                .reduce((a, b) => a?.bandwidth > b?.bandwidth ? a : b);
+}
+
+function extractBestQuality(dashData) {
+    const bestVideo = getBest(dashData.video),
+          bestAudio = getBest(dashData.audio);
+
+    if (!bestVideo || !bestAudio) return [];
+    return [ bestVideo, bestAudio ];
+}
+
+async function com_download(id) {
+    let html = await fetch(`https://bilibili.com/video/${id}`, {
+        headers: {
+            "user-agent": genericUserAgent
+        }
+    })
+    .then(r => r.text())
+    .catch(() => {});
+
+    if (!html) {
+        return { error: "fetch.fail" }
+    }
+
+    if (!(html.includes('<script>window.__playinfo__=') && html.includes('"video_codecid"'))) {
+        return { error: "fetch.empty" };
+    }
+
+    let streamData = JSON.parse(html.split('<script>window.__playinfo__=')[1].split('</script>')[0]);
+    if (streamData.data.timelength > env.durationLimit * 1000) {
+        return { error: "content.too_long" };
+    }
+
+    const [ video, audio ] = extractBestQuality(streamData.data.dash);
+    if (!video || !audio) {
+        return { error: "fetch.empty" };
+    }
+
+    return {
+        urls: [video.baseUrl, audio.baseUrl],
+        audioFilename: `bilibili_${id}_audio`,
+        filename: `bilibili_${id}_${video.width}x${video.height}.mp4`
+    };
+}
+
+async function tv_download(id) {
+    const url = new URL(
+        'https://api.bilibili.tv/intl/gateway/web/playurl'
+        + '?s_locale=en_US&platform=web&qn=64&type=0&device=wap'
+        + '&tf=0&spm_id=bstar-web.ugc-video-detail.0.0&from_spm_id='
+    );
+
+    url.searchParams.set('aid', id);
+
+    const { data } = await fetch(url).then(a => a.json());
+    if (!data?.playurl?.video) {
+        return { error: "fetch.empty" };
+    }
+
+    const [ video, audio ] = extractBestQuality({
+        video: data.playurl.video.map(s => s.video_resource)
+                                 .filter(s => s.codecs.includes('avc1')),
+        audio: data.playurl.audio_resource
+    });
+
+    if (!video || !audio) {
+        return { error: "fetch.empty" };
+    }
+
+    if (video.duration > env.durationLimit * 1000) {
+        return { error: "content.too_long" };
+    }
+
+    return {
+        urls: [video.url, audio.url],
+        audioFilename: `bilibili_tv_${id}_audio`,
+        filename: `bilibili_tv_${id}.mp4`
+    };
+}
+
+export default async function({ comId, tvId, comShortLink }) {
+    if (comShortLink) {
+        comId = await com_resolveShortlink(comShortLink);
+    }
+
+    if (comId) {
+        return com_download(comId);
+    } else if (tvId) {
+        return tv_download(tvId);
+    }
+
+    return { error: "fetch.fail" };
+}

api/src/processing/services/bluesky.js

@@ -0,0 +1,116 @@
+import HLS from "hls-parser";
+import { cobaltUserAgent } from "../../config.js";
+import { createStream } from "../../stream/manage.js";
+
+const extractVideo = async ({ media, filename }) => {
+    const urlMasterHLS = media?.playlist;
+    if (!urlMasterHLS) return { error: "fetch.empty" };
+    if (!urlMasterHLS.startsWith("https://video.bsky.app/")) return { error: "fetch.empty" };
+
+    const masterHLS = await fetch(urlMasterHLS)
+        .then(r => {
+            if (r.status !== 200) return;
+            return r.text();
+        })
+        .catch(() => {});
+
+    if (!masterHLS) return { error: "fetch.empty" };
+
+    const video = HLS.parse(masterHLS)
+            ?.variants
+            ?.reduce((a, b) => a?.bandwidth > b?.bandwidth ? a : b);
+
+    const videoURL = new URL(video.uri, urlMasterHLS).toString();
+
+    return {
+        urls: videoURL,
+        filename: `${filename}.mp4`,
+        audioFilename: `${filename}_audio`,
+        isM3U8: true,
+    }
+}
+
+const extractImages = ({ getPost, filename, alwaysProxy }) => {
+    const images = getPost?.thread?.post?.embed?.images;
+
+    if (!images || images.length === 0) {
+        return { error: "fetch.empty" };
+    }
+
+    if (images.length === 1) return {
+        urls: images[0].fullsize,
+        isPhoto: true,
+        filename: `${filename}.jpg`,
+    }
+
+    const picker = images.map((image, i) => {
+        let url = image.fullsize;
+        let proxiedImage = createStream({
+            service: "bluesky",
+            type: "proxy",
+            u: url,
+            filename: `${filename}_${i + 1}.jpg`,
+        });
+
+        if (alwaysProxy) url = proxiedImage;
+
+        return {
+            type: "photo",
+            url,
+            thumb: proxiedImage,
+        }
+    });
+
+    return { picker };
+}
+
+export default async function ({ user, post, alwaysProxy }) {
+    const apiEndpoint = new URL("https://public.api.bsky.app/xrpc/app.bsky.feed.getPostThread?depth=0&parentHeight=0");
+    apiEndpoint.searchParams.set(
+        "uri",
+        `at://${user}/app.bsky.feed.post/${post}`
+    );
+
+    const getPost = await fetch(apiEndpoint, {
+        headers: {
+            "user-agent": cobaltUserAgent
+        }
+    }).then(r => r.json()).catch(() => {});
+
+    if (!getPost) return { error: "fetch.empty" };
+
+    if (getPost.error) {
+        switch (getPost.error) {
+            case "NotFound":
+            case "InternalServerError":
+                return { error: "content.post.unavailable" };
+            case "InvalidRequest":
+                return { error: "link.unsupported" };
+            default:
+                return { error: "fetch.empty" };
+        }
+    }
+
+    const embedType = getPost?.thread?.post?.embed?.$type;
+    const filename = `bluesky_${user}_${post}`;
+
+    if (embedType === "app.bsky.embed.video#view") {
+        return extractVideo({
+            media: getPost.thread?.post?.embed,
+            filename,
+        })
+    }
+
+    if (embedType === "app.bsky.embed.recordWithMedia#view") {
+        return extractVideo({
+            media: getPost.thread?.post?.embed?.media,
+            filename,
+        })
+    }
+
+    if (embedType === "app.bsky.embed.images#view") {
+        return extractImages({ getPost, filename, alwaysProxy });
+    }
+
+    return { error: "fetch.empty" };
+}

api/src/processing/services/dailymotion.js

@@ -0,0 +1,107 @@
+import HLSParser from "hls-parser";
+import { env } from "../../config.js";
+
+let _token;
+
+function getExp(token) {
+    return JSON.parse(
+        Buffer.from(token.split('.')[1], 'base64')
+    ).exp * 1000;
+}
+
+const getToken = async () => {
+    if (_token && getExp(_token) > new Date().getTime()) {
+        return _token;
+    }
+
+    const req = await fetch('https://graphql.api.dailymotion.com/oauth/token', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8',
+            'User-Agent': 'dailymotion/240213162706 CFNetwork/1492.0.1 Darwin/23.3.0',
+            'Authorization': 'Basic MGQyZDgyNjQwOWFmOWU3MmRiNWQ6ODcxNmJmYTVjYmEwMmUwMGJkYTVmYTg1NTliNDIwMzQ3NzIyYWMzYQ=='
+        },
+        body: 'traffic_segment=&grant_type=client_credentials'
+    }).then(r => r.json()).catch(() => {});
+
+    if (req.access_token) {
+        return _token = req.access_token;
+    }
+}
+
+export default async function({ id }) {
+    const token = await getToken();
+    if (!token) return { error: "fetch.fail" };
+
+    const req = await fetch('https://graphql.api.dailymotion.com/',
+        {
+            method: 'POST',
+            headers: {
+                'User-Agent': 'dailymotion/240213162706 CFNetwork/1492.0.1 Darwin/23.3.0',
+                Authorization: `Bearer ${token}`,
+                'Content-Type': 'application/json',
+                'X-DM-AppInfo-Version': '7.16.0_240213162706',
+                'X-DM-AppInfo-Type': 'iosapp',
+                'X-DM-AppInfo-Id': 'com.dailymotion.dailymotion'
+            },
+            body: JSON.stringify({
+                operationName: "Media",
+                query: `
+                    query Media($xid: String!, $password: String) {
+                        media(xid: $xid, password: $password) {
+                        __typename
+                            ... on Video {
+                                xid
+                                hlsURL
+                                duration
+                                title
+                                channel {
+                                    displayName
+                                }
+                            }
+                        }
+                    }
+                `,
+                variables: { xid: id }
+            })
+        }
+    ).then(r => r.status === 200 && r.json()).catch(() => {});
+
+    const media = req?.data?.media;
+
+    if (media?.__typename !== 'Video' || !media.hlsURL) {
+        return { error: "fetch.empty" }
+    }
+
+    if (media.duration > env.durationLimit) {
+        return { error: "content.too_long" };
+    }
+
+    const manifest = await fetch(media.hlsURL).then(r => r.text()).catch(() => {});
+    if (!manifest) return { error: "fetch.fail" };
+
+    const bestQuality = HLSParser.parse(manifest).variants
+                        .filter(v => v.codecs.includes('avc1'))
+                        .reduce((a, b) => a.bandwidth > b.bandwidth ? a : b);
+    if (!bestQuality) return { error: "fetch.empty" }
+
+    const fileMetadata = {
+        title: media.title,
+        artist: media.channel.displayName
+    }
+
+    return {
+        urls: bestQuality.uri,
+        isM3U8: true,
+        filenameAttributes: {
+            service: 'dailymotion',
+            id: media.xid,
+            title: fileMetadata.title,
+            author: fileMetadata.artist,
+            resolution: `${bestQuality.resolution.width}x${bestQuality.resolution.height}`,
+            qualityLabel: `${bestQuality.resolution.height}p`,
+            extension: 'mp4'
+        },
+        fileMetadata
+    }
+}

api/src/processing/services/facebook.js

@@ -0,0 +1,57 @@
+import { genericUserAgent } from "../../config.js";
+
+const headers = {
+    'User-Agent': genericUserAgent,
+    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8',
+    'Accept-Language': 'en-US,en;q=0.5',
+    'Sec-Fetch-Mode': 'navigate',
+    'Sec-Fetch-Site': 'none',
+}
+
+const resolveUrl = (url) => {
+    return fetch(url, { headers })
+        .then(r => {
+            if (r.headers.get('location')) {
+                return decodeURIComponent(r.headers.get('location'));
+            }
+            if (r.headers.get('link')) {
+                const linkMatch = r.headers.get('link').match(/<(.*?)\/>/);
+                return decodeURIComponent(linkMatch[1]);
+            }
+            return false;
+        })
+        .catch(() => false);
+}
+
+export default async function({ id, shareType, shortLink }) {
+    let url = `https://web.facebook.com/i/videos/${id}`;
+
+    if (shareType) url = `https://web.facebook.com/share/${shareType}/${id}`;
+    if (shortLink) url = await resolveUrl(`https://fb.watch/${shortLink}`);
+
+    const html = await fetch(url, { headers })
+        .then(r => r.text())
+        .catch(() => false);
+
+    if (!html && shortLink) return { error: "fetch.short_link" }
+    if (!html) return { error: "fetch.fail" };
+
+    const urls = [];
+    const hd = html.match('"browser_native_hd_url":(".*?")');
+    const sd = html.match('"browser_native_sd_url":(".*?")');
+
+    if (hd?.[1]) urls.push(JSON.parse(hd[1]));
+    if (sd?.[1]) urls.push(JSON.parse(sd[1]));
+
+    if (!urls.length) {
+        return { error: "fetch.empty" };
+    }
+
+    const baseFilename = `facebook_${id || shortLink}`;
+
+    return {
+        urls: urls[0],
+        filename: `${baseFilename}.mp4`,
+        audioFilename: `${baseFilename}_audio`,
+    };
+}

api/src/processing/services/instagram.js

@@ -0,0 +1,372 @@
+import { genericUserAgent } from "../../config.js";
+import { createStream } from "../../stream/manage.js";
+import { getCookie, updateCookie } from "../cookie/manager.js";
+
+const commonHeaders = {
+    "user-agent": genericUserAgent,
+    "sec-gpc": "1",
+    "sec-fetch-site": "same-origin",
+    "x-ig-app-id": "936619743392459"
+}
+const mobileHeaders = {
+    "x-ig-app-locale": "en_US",
+    "x-ig-device-locale": "en_US",
+    "x-ig-mapped-locale": "en_US",
+    "user-agent": "Instagram 275.0.0.27.98 Android (33/13; 280dpi; 720x1423; Xiaomi; Redmi 7; onclite; qcom; en_US; 458229237)",
+    "accept-language": "en-US",
+    "x-fb-http-engine": "Liger",
+    "x-fb-client-ip": "True",
+    "x-fb-server-cluster": "True",
+    "content-length": "0",
+}
+const embedHeaders = {
+    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
+    "Accept-Language": "en-GB,en;q=0.9",
+    "Cache-Control": "max-age=0",
+    "Dnt": "1",
+    "Priority": "u=0, i",
+    "Sec-Ch-Ua": 'Chromium";v="124", "Google Chrome";v="124", "Not-A.Brand";v="99',
+    "Sec-Ch-Ua-Mobile": "?0",
+    "Sec-Ch-Ua-Platform": "macOS",
+    "Sec-Fetch-Dest": "document",
+    "Sec-Fetch-Mode": "navigate",
+    "Sec-Fetch-Site": "none",
+    "Sec-Fetch-User": "?1",
+    "Upgrade-Insecure-Requests": "1",
+    "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36",
+}
+
+const cachedDtsg = {
+    value: '',
+    expiry: 0
+}
+
+export default function(obj) {
+    const dispatcher = obj.dispatcher;
+
+    async function findDtsgId(cookie) {
+        try {
+            if (cachedDtsg.expiry > Date.now()) return cachedDtsg.value;
+
+            const data = await fetch('https://www.instagram.com/', {
+                headers: {
+                    ...commonHeaders,
+                    cookie
+                },
+                dispatcher
+            }).then(r => r.text());
+
+            const token = data.match(/"dtsg":{"token":"(.*?)"/)[1];
+
+            cachedDtsg.value = token;
+            cachedDtsg.expiry = Date.now() + 86390000;
+
+            if (token) return token;
+            return false;
+        }
+        catch {}
+    }
+
+    async function request(url, cookie, method = 'GET', requestData) {
+        let headers = {
+            ...commonHeaders,
+            'x-ig-www-claim': cookie?._wwwClaim || '0',
+            'x-csrftoken': cookie?.values()?.csrftoken,
+            cookie
+        }
+        if (method === 'POST') {
+            headers['content-type'] = 'application/x-www-form-urlencoded';
+        }
+
+        const data = await fetch(url, {
+            method,
+            headers,
+            body: requestData && new URLSearchParams(requestData),
+            dispatcher
+        });
+
+        if (data.headers.get('X-Ig-Set-Www-Claim') && cookie)
+            cookie._wwwClaim = data.headers.get('X-Ig-Set-Www-Claim');
+
+        updateCookie(cookie, data.headers);
+        return data.json();
+    }
+    async function getMediaId(id, { cookie, token } = {}) {
+        const oembedURL = new URL('https://i.instagram.com/api/v1/oembed/');
+        oembedURL.searchParams.set('url', `https://www.instagram.com/p/${id}/`);
+
+        const oembed = await fetch(oembedURL, {
+            headers: {
+                ...mobileHeaders,
+                ...( token && { authorization: `Bearer ${token}` } ),
+                cookie
+            },
+            dispatcher
+        }).then(r => r.json()).catch(() => {});
+
+        return oembed?.media_id;
+    }
+
+    async function requestMobileApi(mediaId, { cookie, token } = {}) {
+        const mediaInfo = await fetch(`https://i.instagram.com/api/v1/media/${mediaId}/info/`, {
+            headers: {
+                ...mobileHeaders,
+                ...( token && { authorization: `Bearer ${token}` } ),
+                cookie
+            },
+            dispatcher
+        }).then(r => r.json()).catch(() => {});
+
+        return mediaInfo?.items?.[0];
+    }
+    async function requestHTML(id, cookie) {
+        const data = await fetch(`https://www.instagram.com/p/${id}/embed/captioned/`, {
+            headers: {
+                ...embedHeaders,
+                cookie
+            },
+            dispatcher
+        }).then(r => r.text()).catch(() => {});
+
+        let embedData = JSON.parse(data?.match(/"init",\[\],\[(.*?)\]\],/)[1]);
+
+        if (!embedData || !embedData?.contextJSON) return false;
+
+        embedData = JSON.parse(embedData.contextJSON);
+
+        return embedData;
+    }
+    async function requestGQL(id, cookie) {
+        let dtsgId;
+
+        if (cookie) {
+            dtsgId = await findDtsgId(cookie);
+        }
+        const url = new URL('https://www.instagram.com/api/graphql/');
+
+        const requestData = {
+            jazoest: '26406',
+            variables: JSON.stringify({
+            shortcode: id,
+            __relay_internal__pv__PolarisShareMenurelayprovider: false
+            }),
+            doc_id: '7153618348081770'
+        };
+        if (dtsgId) {
+            requestData.fb_dtsg = dtsgId;
+        }
+
+        return (await request(url, cookie, 'POST', requestData))
+                .data
+                ?.xdt_api__v1__media__shortcode__web_info
+                ?.items
+                ?.[0];
+    }
+
+    function extractOldPost(data, id, alwaysProxy) {
+        const sidecar = data?.gql_data?.shortcode_media?.edge_sidecar_to_children;
+        if (sidecar) {
+            const picker = sidecar.edges.filter(e => e.node?.display_url)
+                .map((e, i) => {
+                    const type = e.node?.is_video ? "video" : "photo";
+                    const url = type === "video" ? e.node?.video_url : e.node?.display_url;
+
+                    let itemExt = type === "video" ? "mp4" : "jpg";
+
+                    let proxyFile;
+                    if (alwaysProxy) proxyFile = createStream({
+                        service: "instagram",
+                        type: "proxy",
+                        u: url,
+                        filename: `instagram_${id}_${i + 1}.${itemExt}`
+                    });
+
+                    return {
+                        type,
+                        url: proxyFile || url,
+                        /* thumbnails have `Cross-Origin-Resource-Policy`
+                        ** set to `same-origin`, so we need to proxy them */
+                        thumb: createStream({
+                            service: "instagram",
+                            type: "proxy",
+                            u: e.node?.display_url,
+                            filename: `instagram_${id}_${i + 1}.jpg`
+                        })
+                    }
+                });
+
+            if (picker.length) return { picker }
+        } else if (data?.gql_data?.shortcode_media?.video_url) {
+            return {
+                urls: data.gql_data.shortcode_media.video_url,
+                filename: `instagram_${id}.mp4`,
+                audioFilename: `instagram_${id}_audio`
+            }
+        } else if (data?.gql_data?.shortcode_media?.display_url) {
+            return {
+                urls: data.gql_data?.shortcode_media.display_url,
+                isPhoto: true
+            }
+        }
+    }
+
+    function extractNewPost(data, id, alwaysProxy) {
+        const carousel = data.carousel_media;
+        if (carousel) {
+            const picker = carousel.filter(e => e?.image_versions2)
+                .map((e, i) => {
+                    const type = e.video_versions ? "video" : "photo";
+                    const imageUrl = e.image_versions2.candidates[0].url;
+
+                    let url = imageUrl;
+                    let itemExt = type === "video" ? "mp4" : "jpg";
+
+                    if (type === "video") {
+                        const video = e.video_versions.reduce((a, b) => a.width * a.height < b.width * b.height ? b : a);
+                        url = video.url;
+                    }
+
+                    let proxyFile;
+                    if (alwaysProxy) proxyFile = createStream({
+                        service: "instagram",
+                        type: "proxy",
+                        u: url,
+                        filename: `instagram_${id}_${i + 1}.${itemExt}`
+                    });
+
+                    return {
+                        type,
+                        url: proxyFile || url,
+                        /* thumbnails have `Cross-Origin-Resource-Policy`
+                        ** set to `same-origin`, so we need to always proxy them */
+                        thumb: createStream({
+                            service: "instagram",
+                            type: "proxy",
+                            u: imageUrl,
+                            filename: `instagram_${id}_${i + 1}.jpg`
+                        })
+                    }
+                });
+
+            if (picker.length) return { picker }
+        } else if (data.video_versions) {
+            const video = data.video_versions.reduce((a, b) => a.width * a.height < b.width * b.height ? b : a)
+            return {
+                urls: video.url,
+                filename: `instagram_${id}.mp4`,
+                audioFilename: `instagram_${id}_audio`
+            }
+        } else if (data.image_versions2?.candidates) {
+            return {
+                urls: data.image_versions2.candidates[0].url,
+                isPhoto: true,
+                filename: `instagram_${id}.jpg`,
+            }
+        }
+    }
+
+    async function getPost(id, alwaysProxy) {
+        let data, result;
+        try {
+            const cookie = getCookie('instagram');
+
+            const bearer = getCookie('instagram_bearer');
+            const token = bearer?.values()?.token;
+
+            // get media_id for mobile api, three methods
+            let media_id = await getMediaId(id);
+            if (!media_id && token) media_id = await getMediaId(id, { token });
+            if (!media_id && cookie) media_id = await getMediaId(id, { cookie });
+
+            // mobile api (bearer)
+            if (media_id && token) data = await requestMobileApi(media_id, { token });
+
+            // mobile api (no cookie, cookie)
+            if (media_id && !data) data = await requestMobileApi(media_id);
+            if (media_id && cookie && !data) data = await requestMobileApi(media_id, { cookie });
+
+            // html embed (no cookie, cookie)
+            if (!data) data = await requestHTML(id);
+            if (!data && cookie) data = await requestHTML(id, cookie);
+
+            // web app graphql api (no cookie, cookie)
+            if (!data) data = await requestGQL(id);
+            if (!data && cookie) data = await requestGQL(id, cookie);
+        } catch {}
+
+        if (!data) return { error: "fetch.fail" };
+
+        if (data?.gql_data) {
+            result = extractOldPost(data, id, alwaysProxy)
+        } else {
+            result = extractNewPost(data, id, alwaysProxy)
+        }
+
+        if (result) return result;
+        return { error: "fetch.empty" }
+    }
+
+    async function usernameToId(username, cookie) {
+        const url = new URL('https://www.instagram.com/api/v1/users/web_profile_info/');
+            url.searchParams.set('username', username);
+
+        try {
+            const data = await request(url, cookie);
+            return data?.data?.user?.id;
+        } catch {}
+    }
+
+    async function getStory(username, id) {
+        const cookie = getCookie('instagram');
+        if (!cookie) return { error: "link.unsupported" };
+
+        const userId = await usernameToId(username, cookie);
+        if (!userId) return { error: "fetch.empty" };
+
+        const dtsgId = await findDtsgId(cookie);
+
+        const url = new URL('https://www.instagram.com/api/graphql/');
+        const requestData = {
+            fb_dtsg: dtsgId,
+            jazoest: '26438',
+            variables: JSON.stringify({
+                reel_ids_arr : [ userId ],
+            }),
+            server_timestamps: true,
+            doc_id: '25317500907894419'
+        };
+
+        let media;
+        try {
+            const data = (await request(url, cookie, 'POST', requestData));
+            media = data?.data?.xdt_api__v1__feed__reels_media?.reels_media?.find(m => m.id === userId);
+        } catch {}
+
+        const item = media.items.find(m => m.pk === id);
+        if (!item) return { error: "fetch.empty" };
+
+        if (item.video_versions) {
+            const video = item.video_versions.reduce((a, b) => a.width * a.height < b.width * b.height ? b : a)
+            return {
+                urls: video.url,
+                filename: `instagram_${id}.mp4`,
+                audioFilename: `instagram_${id}_audio`
+            }
+        }
+
+        if (item.image_versions2?.candidates) {
+            return {
+                urls: item.image_versions2.candidates[0].url,
+                isPhoto: true
+            }
+        }
+
+        return { error: "link.unsupported" };
+    }
+
+    const { postId, storyId, username, alwaysProxy } = obj;
+    if (postId) return getPost(postId, alwaysProxy);
+    if (username && storyId) return getStory(username, storyId);
+
+    return { error: "fetch.empty" }
+}

api/src/processing/services/loom.js

@@ -0,0 +1,39 @@
+import { genericUserAgent } from "../../config.js";
+
+export default async function({ id }) {
+    const gql = await fetch(`https://www.loom.com/api/campaigns/sessions/${id}/transcoded-url`, {
+        method: "POST",
+        headers: {
+            "user-agent": genericUserAgent,
+            origin: "https://www.loom.com",
+            referer: `https://www.loom.com/share/${id}`,
+            cookie: `loom_referral_video=${id};`,
+
+            "apollographql-client-name": "web",
+            "apollographql-client-version": "14c0b42",
+            "x-loom-request-source": "loom_web_14c0b42",
+        },
+        body: JSON.stringify({
+            force_original: false,
+            password: null,
+            anonID: null,
+            deviceID: null
+        })
+    })
+    .then(r => r.status === 200 ? r.json() : false)
+    .catch(() => {});
+
+    if (!gql) return { error: "fetch.empty" };
+
+    const videoUrl = gql?.url;
+
+    if (videoUrl?.includes('.mp4?')) {
+        return {
+            urls: videoUrl,
+            filename: `loom_${id}.mp4`,
+            audioFilename: `loom_${id}_audio`
+        }
+    }
+
+    return { error: "fetch.empty" }
+}

api/src/processing/services/ok.js

@@ -0,0 +1,65 @@
+import { genericUserAgent, env } from "../../config.js";
+import { cleanString } from "../../misc/utils.js";
+
+const resolutions = {
+    "ultra": "2160",
+    "quad": "1440",
+    "full": "1080",
+    "hd": "720",
+    "sd": "480",
+    "low": "360",
+    "lowest": "240",
+    "mobile": "144"
+}
+
+export default async function(o) {
+    let quality = o.quality === "max" ? "2160" : o.quality;
+
+    let html = await fetch(`https://ok.ru/video/${o.id}`, {
+        headers: { "user-agent": genericUserAgent }
+    }).then(r => r.text()).catch(() => {});
+
+    if (!html) return { error: "fetch.fail" };
+
+    let videoData = html.match(/<div data-module="OKVideo" .*? data-options="({.*?})"( .*?)>/)
+                        ?.[1]
+                        ?.replaceAll("&quot;", '"');
+
+    if (!videoData) {
+        return { error: "fetch.empty" };
+    }
+
+    videoData = JSON.parse(JSON.parse(videoData).flashvars.metadata);
+
+    if (videoData.provider !== "UPLOADED_ODKL")
+        return { error: "link.unsupported" };
+
+    if (videoData.movie.is_live)
+        return { error: "content.video.live" };
+
+    if (videoData.movie.duration > env.durationLimit)
+        return { error: "content.too_long" };
+
+    let videos = videoData.videos.filter(v => !v.disallowed);
+    let bestVideo = videos.find(v => resolutions[v.name] === quality) || videos[videos.length - 1];
+
+    let fileMetadata = {
+        title: cleanString(videoData.movie.title.trim()),
+        author: cleanString((videoData.author?.name || videoData.compilationTitle).trim()),
+    }
+
+    if (bestVideo) return {
+        urls: bestVideo.url,
+        filenameAttributes: {
+            service: "ok",
+            id: o.id,
+            title: fileMetadata.title,
+            author: fileMetadata.author,
+            resolution: `${resolutions[bestVideo.name]}p`,
+            qualityLabel: `${resolutions[bestVideo.name]}p`,
+            extension: "mp4"
+        }
+    }
+
+    return { error: "fetch.empty" }
+}

api/src/processing/services/pinterest.js

@@ -0,0 +1,46 @@
+import { genericUserAgent } from "../../config.js";
+
+const videoRegex = /"url":"(https:\/\/v1\.pinimg\.com\/videos\/.*?)"/g;
+const imageRegex = /src="(https:\/\/i\.pinimg\.com\/.*\.(jpg|gif))"/g;
+
+export default async function(o) {
+    let id = o.id;
+
+    if (!o.id && o.shortLink) {
+        id = await fetch(`https://api.pinterest.com/url_shortener/${o.shortLink}/redirect/`, { redirect: "manual" })
+                   .then(r => r.headers.get("location").split('pin/')[1].split('/')[0])
+                   .catch(() => {});
+    }
+    if (id.includes("--")) id = id.split("--")[1];
+    if (!id) return { error: "fetch.fail" };
+
+    const html = await fetch(`https://www.pinterest.com/pin/${id}/`, {
+        headers: { "user-agent": genericUserAgent }
+    }).then(r => r.text()).catch(() => {});
+
+    if (!html) return { error: "fetch.fail" };
+
+    const videoLink = [...html.matchAll(videoRegex)]
+                    .map(([, link]) => link)
+                    .find(a => a.endsWith('.mp4') && a.includes('720p'));
+
+    if (videoLink) return {
+        urls: videoLink,
+        filename: `pinterest_${o.id}.mp4`,
+        audioFilename: `pinterest_${o.id}_audio`
+    }
+
+    const imageLink = [...html.matchAll(imageRegex)]
+                    .map(([, link]) => link)
+                    .find(a => a.endsWith('.jpg') || a.endsWith('.gif'));
+
+    const imageType = imageLink.endsWith(".gif") ? "gif" : "jpg"
+
+    if (imageLink) return {
+        urls: imageLink,
+        isPhoto: true,
+        filename: `pinterest_${o.id}.${imageType}`
+    }
+
+    return { error: "fetch.empty" };
+}

api/src/processing/services/reddit.js

@@ -0,0 +1,127 @@
+import { genericUserAgent, env } from "../../config.js";
+import { getCookie, updateCookieValues } from "../cookie/manager.js";
+
+async function getAccessToken() {
+    /* "cookie" in cookiefile needs to contain:
+     * client_id, client_secret, refresh_token
+     * e.g. client_id=bla; client_secret=bla; refresh_token=bla
+     *
+     * you can get these by making a reddit app and
+     * authenticating an account against reddit's oauth2 api
+     * see: https://github.com/reddit-archive/reddit/wiki/OAuth2
+     *
+     * any additional cookie fields are managed by this code and you
+     * should not touch them unless you know what you're doing. **/
+    const cookie = await getCookie('reddit');
+    if (!cookie) return;
+
+    const values = cookie.values(),
+          needRefresh = !values.access_token
+                        || !values.expiry
+                        || Number(values.expiry) < new Date().getTime();
+    if (!needRefresh) return values.access_token;
+
+    const data = await fetch('https://www.reddit.com/api/v1/access_token', {
+        method: 'POST',
+        headers: {
+            'authorization': `Basic ${Buffer.from(
+                [values.client_id, values.client_secret].join(':')
+            ).toString('base64')}`,
+            'content-type': 'application/x-www-form-urlencoded',
+            'user-agent': genericUserAgent,
+            'accept': 'application/json'
+        },
+        body: `grant_type=refresh_token&refresh_token=${encodeURIComponent(values.refresh_token)}`
+    }).then(r => r.json()).catch(() => {});
+    if (!data) return;
+
+    const { access_token, refresh_token, expires_in } = data;
+    if (!access_token) return;
+
+    updateCookieValues(cookie, {
+        ...cookie.values(),
+        access_token, refresh_token,
+        expiry: new Date().getTime() + (expires_in * 1000),
+    });
+
+    return access_token;
+}
+
+export default async function(obj) {
+    let url = new URL(`https://www.reddit.com/r/${obj.sub}/comments/${obj.id}.json`);
+
+    if (obj.user) {
+        url.pathname = `/user/${obj.user}/comments/${obj.id}.json`;
+    }
+
+    const accessToken = await getAccessToken();
+    if (accessToken) url.hostname = 'oauth.reddit.com';
+
+    let data = await fetch(
+        url, {
+            headers: {
+                'User-Agent': genericUserAgent,
+                accept: 'application/json',
+                authorization: accessToken && `Bearer ${accessToken}`
+            }
+        }
+    ).then(r => r.json()).catch(() => {});
+
+    if (!data || !Array.isArray(data)) {
+        return { error: "fetch.fail" }
+    }
+
+    data = data[0]?.data?.children[0]?.data;
+
+    const id = `${String(obj.sub).toLowerCase()}_${obj.id}`;
+
+    if (data?.url?.endsWith('.gif')) return {
+        typeId: "redirect",
+        urls: data.url,
+        filename: `reddit_${id}.gif`,
+    }
+
+    if (!data.secure_media?.reddit_video)
+        return { error: "fetch.empty" };
+
+    if (data.secure_media?.reddit_video?.duration > env.durationLimit)
+        return { error: "content.too_long" };
+
+    let audio = false,
+        video = data.secure_media?.reddit_video?.fallback_url?.split('?')[0],
+        audioFileLink = `${data.secure_media?.reddit_video?.fallback_url?.split('DASH')[0]}audio`;
+
+    if (video.match('.mp4')) {
+        audioFileLink = `${video.split('_')[0]}_audio.mp4`
+    }
+
+    // test the existence of audio
+    await fetch(audioFileLink, { method: "HEAD" }).then(r => {
+        if (Number(r.status) === 200) {
+            audio = true
+        }
+    }).catch(() => {})
+
+    // fallback for videos with variable audio quality
+    if (!audio) {
+        audioFileLink = `${video.split('_')[0]}_AUDIO_128.mp4`
+        await fetch(audioFileLink, { method: "HEAD" }).then(r => {
+            if (Number(r.status) === 200) {
+                audio = true
+            }
+        }).catch(() => {})
+    }
+
+    if (!audio) return {
+        typeId: "redirect",
+        urls: video
+    }
+
+    return {
+        typeId: "tunnel",
+        type: "merge",
+        urls: [video, audioFileLink],
+        audioFilename: `reddit_${id}_audio`,
+        filename: `reddit_${id}.mp4`
+    }
+}

api/src/processing/services/rutube.js

@@ -0,0 +1,80 @@
+import HLS from "hls-parser";
+
+import { env } from "../../config.js";
+import { cleanString } from "../../misc/utils.js";
+
+async function requestJSON(url) {
+    try {
+        const r = await fetch(url);
+        return await r.json();
+    } catch {}
+}
+
+const delta = (a, b) => Math.abs(a - b);
+
+export default async function(obj) {
+    if (obj.yappyId) {
+        const yappy = await requestJSON(
+            `https://rutube.ru/pangolin/api/web/yappy/yappypage/?client=wdp&videoId=${obj.yappyId}&page=1&page_size=15`
+        )
+        const yappyURL = yappy?.results?.find(r => r.id === obj.yappyId)?.link;
+        if (!yappyURL) return { error: "fetch.empty" };
+
+        return {
+            urls: yappyURL,
+            filename: `rutube_yappy_${obj.yappyId}.mp4`,
+            audioFilename: `rutube_yappy_${obj.yappyId}_audio`
+        }
+    }
+
+    const quality = Number(obj.quality) || 9000;
+
+    const requestURL = new URL(`https://rutube.ru/api/play/options/${obj.id}/?no_404=true&referer&pver=v2`);
+    if (obj.key) requestURL.searchParams.set('p', obj.key);
+
+    const play = await requestJSON(requestURL);
+    if (!play) return { error: "fetch.fail" };
+
+    if (play.detail || !play.video_balancer) return { error: "fetch.empty" };
+    if (play.live_streams?.hls) return { error: "content.video.live" };
+
+    if (play.duration > env.durationLimit * 1000)
+        return { error: "content.too_long" };
+
+    let m3u8 = await fetch(play.video_balancer.m3u8)
+                     .then(r => r.text())
+                     .catch(() => {});
+
+    if (!m3u8) return { error: "fetch.fail" };
+
+    m3u8 = HLS.parse(m3u8).variants;
+
+    const matchingQuality = m3u8.reduce((prev, next) => {
+        const diff = {
+            prev: delta(quality, prev.resolution.height),
+            next: delta(quality, next.resolution.height)
+        };
+
+        return diff.prev < diff.next ? prev : next;
+    });
+
+    const fileMetadata = {
+        title: cleanString(play.title.trim()),
+        artist: cleanString(play.author.name.trim()),
+    }
+
+    return {
+        urls: matchingQuality.uri,
+        isM3U8: true,
+        filenameAttributes: {
+            service: "rutube",
+            id: obj.id,
+            title: fileMetadata.title,
+            author: fileMetadata.artist,
+            resolution: `${matchingQuality.resolution.width}x${matchingQuality.resolution.height}`,
+            qualityLabel: `${matchingQuality.resolution.height}p`,
+            extension: "mp4"
+        },
+        fileMetadata: fileMetadata
+    }
+}

api/src/processing/services/snapchat.js

@@ -0,0 +1,126 @@
+import { extract, normalizeURL } from "../url.js";
+import { genericUserAgent } from "../../config.js";
+import { createStream } from "../../stream/manage.js";
+import { getRedirectingURL } from "../../misc/utils.js";
+
+const SPOTLIGHT_VIDEO_REGEX = /<link data-react-helmet="true" rel="preload" href="([^"]+)" as="video"\/>/;
+const NEXT_DATA_REGEX = /<script id="__NEXT_DATA__" type="application\/json">({.+})<\/script><\/body><\/html>$/;
+
+async function getSpotlight(id) {
+    const html = await fetch(`https://www.snapchat.com/spotlight/${id}`, {
+        headers: { 'user-agent': genericUserAgent }
+    }).then((r) => r.text()).catch(() => null);
+
+    if (!html) {
+        return { error: "fetch.fail" };
+    }
+
+    const videoURL = html.match(SPOTLIGHT_VIDEO_REGEX)?.[1];
+
+    if (videoURL && new URL(videoURL).hostname.endsWith(".sc-cdn.net")) {
+        return {
+            urls: videoURL,
+            filename: `snapchat_${id}.mp4`,
+            audioFilename: `snapchat_${id}_audio`
+        }
+    }
+}
+
+async function getStory(username, storyId, alwaysProxy) {
+    const html = await fetch(
+        `https://www.snapchat.com/add/${username}${storyId ? `/${storyId}` : ''}`,
+        { headers: { 'user-agent': genericUserAgent } }
+    )
+    .then((r) => r.text())
+    .catch(() => null);
+
+    if (!html) {
+        return { error: "fetch.fail" };
+    }
+
+    const nextDataString = html.match(NEXT_DATA_REGEX)?.[1];
+    if (nextDataString) {
+        const data = JSON.parse(nextDataString);
+        const storyIdParam = data.query.profileParams[1];
+
+        if (storyIdParam && data.props.pageProps.story) {
+            const story = data.props.pageProps.story.snapList.find((snap) => snap.snapId.value === storyIdParam);
+            if (story) {
+                if (story.snapMediaType === 0) {
+                    return {
+                        urls: story.snapUrls.mediaUrl,
+                        filename: `snapchat_${storyId}.jpg`,
+                        isPhoto: true
+                    }
+                }
+
+                return {
+                    urls: story.snapUrls.mediaUrl,
+                    filename: `snapchat_${storyId}.mp4`,
+                    audioFilename: `snapchat_${storyId}_audio`
+                }
+            }
+        }
+
+        const defaultStory = data.props.pageProps.curatedHighlights[0];
+        if (defaultStory) {
+            return {
+                picker: defaultStory.snapList.map(snap => {
+                    const snapType = snap.snapMediaType === 0 ? "photo" : "video";
+                    const snapExt = snapType === "video" ? "mp4" : "jpg";
+                    let snapUrl = snap.snapUrls.mediaUrl;
+
+                    const proxy = createStream({
+                        service: "snapchat",
+                        type: "proxy",
+                        u: snapUrl,
+                        filename: `snapchat_${username}_${snap.timestampInSec.value}.${snapExt}`,
+                    });
+
+                    let thumbProxy;
+                    if (snapType === "video") thumbProxy = createStream({
+                        service: "snapchat",
+                        type: "proxy",
+                        u: snap.snapUrls.mediaPreviewUrl.value,
+                    });
+
+                    if (alwaysProxy) snapUrl = proxy;
+
+                    return {
+                        type: snapType,
+                        url: snapUrl,
+                        thumb: thumbProxy || proxy,
+                    }
+                })
+            }
+        }
+    }
+}
+
+export default async function (obj) {
+    let params = obj;
+    if (obj.shortLink) {
+        const link = await getRedirectingURL(`https://t.snapchat.com/${obj.shortLink}`);
+
+        if (!link?.startsWith('https://www.snapchat.com/')) {
+            return { error: "fetch.short_link" };
+        }
+
+        const extractResult = extract(normalizeURL(link));
+        if (extractResult?.host !== 'snapchat') {
+            return { error: "fetch.short_link" };
+        }
+
+        params = extractResult.patternMatch;
+    }
+
+    if (params.spotlightId) {
+        const result = await getSpotlight(params.spotlightId);
+        if (result) return result;
+    } else if (params.username) {
+        const result = await getStory(params.username, params.storyId, obj.alwaysProxy);
+        if (result) return result;
+    }
+
+    return { error: "fetch.fail" };
+}

api/src/processing/services/soundcloud.js

@@ -0,0 +1,109 @@
+import { env } from "../../config.js";
+import { cleanString } from "../../misc/utils.js";
+
+const cachedID = {
+    version: '',
+    id: ''
+}
+
+async function findClientID() {
+    try {
+        let sc = await fetch('https://soundcloud.com/').then(r => r.text()).catch(() => {});
+        let scVersion = String(sc.match(/<script>window\.__sc_version="[0-9]{10}"<\/script>/)[0].match(/[0-9]{10}/));
+
+        if (cachedID.version === scVersion) return cachedID.id;
+
+        let scripts = sc.matchAll(/<script.+src="(.+)">/g);
+        let clientid;
+        for (let script of scripts) {
+            let url = script[1];
+
+            if (!url?.startsWith('https://a-v2.sndcdn.com/')) {
+                return;
+            }
+
+            let scrf = await fetch(url).then(r => r.text()).catch(() => {});
+            let id = scrf.match(/\("client_id=[A-Za-z0-9]{32}"\)/);
+
+            if (id && typeof id[0] === 'string') {
+                clientid = id[0].match(/[A-Za-z0-9]{32}/)[0];
+                break;
+            }
+        }
+        cachedID.version = scVersion;
+        cachedID.id = clientid;
+
+        return clientid;
+    } catch {}
+}
+
+export default async function(obj) {
+    let clientId = await findClientID();
+    if (!clientId) return { error: "fetch.fail" };
+
+    let link;
+    if (obj.url.hostname === 'on.soundcloud.com' && obj.shortLink) {
+        link = await fetch(`https://on.soundcloud.com/${obj.shortLink}/`, { redirect: "manual" }).then(r => {
+            if (r.status === 302 && r.headers.get("location").startsWith("https://soundcloud.com/")) {
+                return r.headers.get("location").split('?', 1)[0]
+            }
+        }).catch(() => {});
+    }
+
+    if (!link && obj.author && obj.song) {
+        link = `https://soundcloud.com/${obj.author}/${obj.song}${obj.accessKey ? `/s-${obj.accessKey}` : ''}`
+    }
+
+    if (!link && obj.shortLink) return { error: "fetch.short_link" };
+    if (!link) return { error: "link.unsupported" };
+
+    let json = await fetch(`https://api-v2.soundcloud.com/resolve?url=${link}&client_id=${clientId}`)
+                     .then(r => r.status === 200 ? r.json() : false)
+                     .catch(() => {});
+
+    if (!json) return { error: "fetch.fail" };
+
+    if (!json.media.transcodings) return { error: "fetch.empty" };
+
+    let bestAudio = "opus",
+        selectedStream = json.media.transcodings.find(v => v.preset === "opus_0_0"),
+        mp3Media = json.media.transcodings.find(v => v.preset === "mp3_0_0");
+
+    // use mp3 if present if user prefers it or if opus isn't available
+    if (mp3Media && (obj.format === "mp3" || !selectedStream)) {
+        selectedStream = mp3Media;
+        bestAudio = "mp3"
+    }
+
+    let fileUrlBase = selectedStream.url;
+    let fileUrl = `${fileUrlBase}${fileUrlBase.includes("?") ? "&" : "?"}client_id=${clientId}&track_authorization=${json.track_authorization}`;
+
+    if (!fileUrl.startsWith("https://api-v2.soundcloud.com/media/soundcloud:tracks:"))
+        return { error: "fetch.empty" };
+
+    if (json.duration > env.durationLimit * 1000) {
+        return { error: "content.too_long" };
+    }
+
+    let file = await fetch(fileUrl)
+                     .then(async r => (await r.json()).url)
+                     .catch(() => {});
+    if (!file) return { error: "fetch.empty" };
+
+    let fileMetadata = {
+        title: cleanString(json.title.trim()),
+        artist: cleanString(json.user.username.trim()),
+    }
+
+    return {
+        urls: file,
+        filenameAttributes: {
+            service: "soundcloud",
+            id: json.id,
+            title: fileMetadata.title,
+            author: fileMetadata.artist
+        },
+        bestAudio,
+        fileMetadata
+    }
+}

api/src/processing/services/streamable.js

@@ -0,0 +1,22 @@
+export default async function(obj) {
+    let video = await fetch(`https://api.streamable.com/videos/${obj.id}`)
+                      .then(r => r.status === 200 ? r.json() : false)
+                      .catch(() => {});
+
+    if (!video) return { error: "fetch.empty" };
+
+    let best = video.files["mp4-mobile"];
+    if (video.files.mp4 && (obj.isAudioOnly || obj.quality === "max" || obj.quality >= 720)) {
+        best = video.files.mp4;
+    }
+
+    if (best) return {
+        urls: best.url,
+        filename: `streamable_${obj.id}_${best.width}x${best.height}.mp4`,
+        audioFilename: `streamable_${obj.id}_audio`,
+        fileMetadata: {
+            title: video.title
+        }
+    }
+    return { error: "fetch.fail" }
+}

api/src/processing/services/tiktok.js

@@ -0,0 +1,134 @@
+import Cookie from "../cookie/cookie.js";
+
+import { extract } from "../url.js";
+import { genericUserAgent } from "../../config.js";
+import { updateCookie } from "../cookie/manager.js";
+import { createStream } from "../../stream/manage.js";
+
+const shortDomain = "https://vt.tiktok.com/";
+
+export default async function(obj) {
+    const cookie = new Cookie({});
+    let postId = obj.postId;
+
+    if (!postId) {
+        let html = await fetch(`${shortDomain}${obj.id}`, {
+            redirect: "manual",
+            headers: {
+                "user-agent": genericUserAgent.split(' Chrome/1')[0]
+            }
+        }).then(r => r.text()).catch(() => {});
+
+        if (!html) return { error: "fetch.fail" };
+
+        if (html.startsWith('<a href="https://')) {
+            const extractedURL = html.split('<a href="')[1].split('?')[0];
+            const { patternMatch } = extract(extractedURL);
+            postId = patternMatch.postId
+        }
+    }
+    if (!postId) return { error: "fetch.short_link" };
+
+    // should always be /video/, even for photos
+    const res = await fetch(`https://tiktok.com/@i/video/${postId}`, {
+        headers: {
+            "user-agent": genericUserAgent,
+            cookie,
+        }
+    })
+    updateCookie(cookie, res.headers);
+
+    const html = await res.text();
+
+    let detail;
+    try {
+        const json = html
+            .split('<script id="__UNIVERSAL_DATA_FOR_REHYDRATION__" type="application/json">')[1]
+            .split('</script>')[0]
+        const data = JSON.parse(json)
+        detail = data["__DEFAULT_SCOPE__"]["webapp.video-detail"]["itemInfo"]["itemStruct"]
+    } catch {
+        return { error: "fetch.fail" };
+    }
+
+    let video, videoFilename, audioFilename, audio, images,
+        filenameBase = `tiktok_${detail.author.uniqueId}_${postId}`,
+        bestAudio; // will get defaulted to m4a later on in match-action
+
+    images = detail.imagePost?.images;
+
+    let playAddr = detail.video.playAddr;
+    if (obj.h265) {
+        const h265PlayAddr = detail?.video?.bitrateInfo?.find(b => b.CodecType.includes("h265"))?.PlayAddr.UrlList[0]
+        playAddr = h265PlayAddr || playAddr
+    }
+
+    if (!obj.isAudioOnly && !images) {
+        video = playAddr;
+        videoFilename = `${filenameBase}.mp4`;
+    } else {
+        audio = playAddr;
+        audioFilename = `${filenameBase}_audio`;
+
+        if (obj.fullAudio || !audio) {
+            audio = detail.music.playUrl;
+            audioFilename += `_original`
+        }
+        if (audio.includes("mime_type=audio_mpeg")) bestAudio = 'mp3';
+    }
+
+    if (video) {
+        return {
+            urls: video,
+            filename: videoFilename,
+            headers: { cookie }
+        }
+    }
+
+    if (images && obj.isAudioOnly) {
+        return {
+            urls: audio,
+            audioFilename: audioFilename,
+            isAudioOnly: true,
+            bestAudio,
+            headers: { cookie }
+        }
+    }
+
+    if (images) {
+        let imageLinks = images
+            .map(i => i.imageURL.urlList.find(p => p.includes(".jpeg?")))
+            .map((url, i) => {
+                if (obj.alwaysProxy) url = createStream({
+                    service: "tiktok",
+                    type: "proxy",
+                    u: url,
+                    filename: `${filenameBase}_photo_${i + 1}.jpg`
+                })
+
+                return {
+                    type: "photo",
+                    url
+                }
+            });
+
+        return {
+            picker: imageLinks,
+            urls: audio,
+            audioFilename: audioFilename,
+            isAudioOnly: true,
+            bestAudio,
+            headers: { cookie }
+        }
+    }
+
+    if (audio) {
+        return {
+            urls: audio,
+            audioFilename: audioFilename,
+            isAudioOnly: true,
+            bestAudio,
+            headers: { cookie }
+        }
+    }
+}

api/src/processing/services/tumblr.js

@@ -0,0 +1,71 @@
+import psl from "psl";
+
+const API_KEY = 'jrsCWX1XDuVxAFO4GkK147syAoN8BJZ5voz8tS80bPcj26Vc5Z';
+const API_BASE = 'https://api-http2.tumblr.com';
+
+function request(domain, id) {
+    const url = new URL(`/v2/blog/${domain}/posts/${id}/permalink`, API_BASE);
+    url.searchParams.set('api_key', API_KEY);
+    url.searchParams.set('fields[blogs]', 'uuid,name,avatar,?description,?can_message,?can_be_followed,?is_adult,?reply_conditions,'
+                                            + '?theme,?title,?url,?is_blocked_from_primary,?placement_id,?primary,?updated,?followed,'
+                                            + '?ask,?can_subscribe,?paywall_access,?subscription_plan,?is_blogless_advertiser,?tumblrmart_accessories');
+
+    return fetch(url, {
+        headers: {
+            'User-Agent': 'Tumblr/iPhone/33.3/333010/17.3.1/tumblr',
+            'X-Version': 'iPhone/33.3/333010/17.3.1/tumblr'
+        }
+    }).then(a => a.json()).catch(() => {});
+}
+
+export default async function(input) {
+    let { subdomain } = psl.parse(input.url.hostname);
+
+    if (subdomain?.includes('.')) {
+        return { error: "link.unsupported" };
+    } else if (subdomain === 'www' || subdomain === 'at') {
+        subdomain = undefined
+    }
+
+    const domain = `${subdomain ?? input.user}.tumblr.com`;
+    const data = await request(domain, input.id);
+
+    const element = data?.response?.timeline?.elements?.[0];
+    if (!element) return { error: "fetch.empty" };
+
+    const contents = [
+        ...element.content,
+        ...element?.trail?.map(t => t.content).flat()
+    ]
+
+    const audio = contents.find(c => c.type === 'audio');
+    if (audio && audio.provider === 'tumblr') {
+        const fileMetadata = {
+            title: audio?.title,
+            artist: audio?.artist
+        };
+
+        return {
+            urls: audio.media.url,
+            filenameAttributes: {
+                service: 'tumblr',
+                id: input.id,
+                title: fileMetadata.title,
+                author: fileMetadata.artist
+            },
+            isAudioOnly: true,
+            bestAudio: "mp3",
+        }
+    }
+
+    const video = contents.find(c => c.type === 'video');
+    if (video && video.provider === 'tumblr') {
+        return {
+            urls: video.media.url,
+            filename: `tumblr_${input.id}.mp4`,
+            audioFilename: `tumblr_${input.id}_audio`
+        }
+    }
+
+    return { error: "link.unsupported" }
+}

api/src/processing/services/twitch.js

@@ -0,0 +1,90 @@
+import { env } from "../../config.js";
+import { cleanString } from '../../misc/utils.js';
+
+const gqlURL = "https://gql.twitch.tv/gql";
+const clientIdHead = { "client-id": "kimne78kx3ncx6brgo4mv6wki5h1ko" };
+
+export default async function (obj) {
+    const req_metadata = await fetch(gqlURL, {
+        method: "POST",
+        headers: clientIdHead,
+        body: JSON.stringify({
+            query: `{
+            clip(slug: "${obj.clipId}") {
+                broadcaster {
+                    login
+                }
+                createdAt
+                curator {
+                    login
+                }
+                durationSeconds
+                id
+                medium: thumbnailURL(width: 480, height: 272)
+                title
+                videoQualities {
+                    quality
+                    sourceURL
+                }
+            }
+        }`
+        })
+    }).then(r => r.status === 200 ? r.json() : false).catch(() => {});
+
+    if (!req_metadata) return { error: "fetch.fail" };
+
+    const clipMetadata = req_metadata.data.clip;
+
+    if (clipMetadata.durationSeconds > env.durationLimit) {
+        return { error: "content.too_long" };
+    }
+    if (!clipMetadata.videoQualities || !clipMetadata.broadcaster) {
+        return { error: "fetch.empty" };
+    }
+
+    const req_token = await fetch(gqlURL, {
+        method: "POST",
+        headers: clientIdHead,
+        body: JSON.stringify([
+            {
+                "operationName": "VideoAccessToken_Clip",
+                "variables": {
+                    "slug": obj.clipId
+                },
+                "extensions": {
+                    "persistedQuery": {
+                        "version": 1,
+                        "sha256Hash": "36b89d2507fce29e5ca551df756d27c1cfe079e2609642b4390aa4c35796eb11"
+                    }
+                }
+            }
+        ])
+    }).then(r => r.status === 200 ? r.json() : false).catch(() => {});
+
+    if (!req_token) return { error: "fetch.fail" };
+
+    const formats = clipMetadata.videoQualities;
+    const format = formats.find(f => f.quality === obj.quality) || formats[0];
+
+    return {
+        type: "proxy",
+        urls: `${format.sourceURL}?${new URLSearchParams({
+            sig: req_token[0].data.clip.playbackAccessToken.signature,
+            token: req_token[0].data.clip.playbackAccessToken.value
+        })}`,
+        fileMetadata: {
+            title: cleanString(clipMetadata.title.trim()),
+            artist: `Twitch Clip by @${clipMetadata.broadcaster.login}, clipped by @${clipMetadata.curator.login}`,
+        },
+        filenameAttributes: {
+            service: "twitch",
+            id: clipMetadata.id,
+            title: cleanString(clipMetadata.title.trim()),
+            author: `${clipMetadata.broadcaster.login}, clipped by ${clipMetadata.curator.login}`,
+            qualityLabel: `${format.quality}p`,
+            extension: 'mp4'
+        },
+        filename: `twitchclip_${clipMetadata.id}_${format.quality}p.mp4`,
+        audioFilename: `twitchclip_${clipMetadata.id}_audio`
+    }
+}

api/src/processing/services/twitter.js

@@ -0,0 +1,235 @@
+import { genericUserAgent } from "../../config.js";
+import { createStream } from "../../stream/manage.js";
+import { getCookie, updateCookie } from "../cookie/manager.js";
+
+const graphqlURL = 'https://api.x.com/graphql/I9GDzyCGZL2wSoYFFrrTVw/TweetResultByRestId';
+const tokenURL = 'https://api.x.com/1.1/guest/activate.json';
+
+const tweetFeatures = JSON.stringify({"creator_subscriptions_tweet_preview_api_enabled":true,"communities_web_enable_tweet_community_results_fetch":true,"c9s_tweet_anatomy_moderator_badge_enabled":true,"articles_preview_enabled":true,"tweetypie_unmention_optimization_enabled":true,"responsive_web_edit_tweet_api_enabled":true,"graphql_is_translatable_rweb_tweet_is_translatable_enabled":true,"view_counts_everywhere_api_enabled":true,"longform_notetweets_consumption_enabled":true,"responsive_web_twitter_article_tweet_consumption_enabled":true,"tweet_awards_web_tipping_enabled":false,"creator_subscriptions_quote_tweet_preview_enabled":false,"freedom_of_speech_not_reach_fetch_enabled":true,"standardized_nudges_misinfo":true,"tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled":true,"rweb_video_timestamps_enabled":true,"longform_notetweets_rich_text_read_enabled":true,"longform_notetweets_inline_media_enabled":true,"rweb_tipjar_consumption_enabled":true,"responsive_web_graphql_exclude_directive_enabled":true,"verified_phone_label_enabled":false,"responsive_web_graphql_skip_user_profile_image_extensions_enabled":false,"responsive_web_graphql_timeline_navigation_enabled":true,"responsive_web_enhance_cards_enabled":false});
+
+const tweetFieldToggles = JSON.stringify({"withArticleRichContentState":true,"withArticlePlainText":false,"withGrokAnalyze":false});
+
+const commonHeaders = {
+    "user-agent": genericUserAgent,
+    "authorization": "Bearer AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA",
+    "x-twitter-client-language": "en",
+    "x-twitter-active-user": "yes",
+    "accept-language": "en"
+}
+
+// fix all videos affected by the container bug in twitter muxer (took them over two weeks to fix it????)
+const TWITTER_EPOCH = 1288834974657n;
+const badContainerStart = new Date(1701446400000);
+const badContainerEnd = new Date(1702605600000);
+
+function needsFixing(media) {
+    const representativeId = media.source_status_id_str ?? media.id_str;
+    const mediaTimestamp = new Date(
+        Number((BigInt(representativeId) >> 22n) + TWITTER_EPOCH)
+    );
+    return mediaTimestamp > badContainerStart && mediaTimestamp < badContainerEnd
+}
+
+function bestQuality(arr) {
+    return arr.filter(v => v.content_type === "video/mp4")
+        .reduce((a, b) => Number(a?.bitrate) > Number(b?.bitrate) ? a : b)
+        .url
+}
+
+let _cachedToken;
+const getGuestToken = async (dispatcher, forceReload = false) => {
+    if (_cachedToken && !forceReload) {
+        return _cachedToken;
+    }
+
+    const tokenResponse = await fetch(tokenURL, {
+        method: 'POST',
+        headers: commonHeaders,
+        dispatcher
+    }).then(r => r.status === 200 && r.json()).catch(() => {})
+
+    if (tokenResponse?.guest_token) {
+        return _cachedToken = tokenResponse.guest_token
+    }
+}
+
+const requestTweet = async(dispatcher, tweetId, token, cookie) => {
+    const graphqlTweetURL = new URL(graphqlURL);
+
+    let headers = {
+        ...commonHeaders,
+        'content-type': 'application/json',
+        'x-guest-token': token,
+        cookie: `guest_id=${encodeURIComponent(`v1:${token}`)}`
+    }
+
+    if (cookie) {
+        headers = {
+            ...commonHeaders,
+            'content-type': 'application/json',
+            'X-Twitter-Auth-Type': 'OAuth2Session',
+            'x-csrf-token': cookie.values().ct0,
+            cookie
+        }
+    }
+
+    graphqlTweetURL.searchParams.set('variables',
+        JSON.stringify({
+            tweetId,
+            withCommunity: false,
+            includePromotedContent: false,
+            withVoice: false
+        })
+    );
+    graphqlTweetURL.searchParams.set('features', tweetFeatures);
+    graphqlTweetURL.searchParams.set('fieldToggles', tweetFieldToggles);
+
+    let result = await fetch(graphqlTweetURL, { headers, dispatcher });
+    updateCookie(cookie, result.headers);
+
+    // we might have been missing the `ct0` cookie, retry
+    if (result.status === 403 && result.headers.get('set-cookie')) {
+        result = await fetch(graphqlTweetURL, {
+            headers: {
+                ...headers,
+                'x-csrf-token': cookie.values().ct0
+            },
+            dispatcher
+        });
+    }
+
+    return result
+}
+
+export default async function({ id, index, toGif, dispatcher, alwaysProxy }) {
+    const cookie = await getCookie('twitter');
+
+    let guestToken = await getGuestToken(dispatcher);
+    if (!guestToken) return { error: "fetch.fail" };
+
+    let tweet = await requestTweet(dispatcher, id, guestToken);
+
+    // get new token & retry if old one expired
+    if ([403, 429].includes(tweet.status)) {
+        guestToken = await getGuestToken(dispatcher, true);
+        tweet = await requestTweet(dispatcher, id, guestToken)
+    }
+
+    tweet = await tweet.json();
+
+    let tweetTypename = tweet?.data?.tweetResult?.result?.__typename;
+
+    if (!tweetTypename) {
+        return { error: "fetch.empty" }
+    }
+
+    if (tweetTypename === "TweetUnavailable") {
+        const reason = tweet?.data?.tweetResult?.result?.reason;
+        switch(reason) {
+            case "Protected":
+                return { error: "content.post.private" }
+            case "NsfwLoggedOut":
+                if (cookie) {
+                    tweet = await requestTweet(dispatcher, id, guestToken, cookie);
+                    tweet = await tweet.json();
+                    tweetTypename = tweet?.data?.tweetResult?.result?.__typename;
+                } else return { error: "content.post.age" }
+        }
+    }
+
+    if (!["Tweet", "TweetWithVisibilityResults"].includes(tweetTypename)) {
+        return { error: "content.post.unavailable" }
+    }
+
+    let tweetResult = tweet.data.tweetResult.result,
+        baseTweet = tweetResult.legacy,
+        repostedTweet = baseTweet?.retweeted_status_result?.result.legacy.extended_entities;
+
+    if (tweetTypename === "TweetWithVisibilityResults") {
+        baseTweet = tweetResult.tweet.legacy;
+        repostedTweet = baseTweet?.retweeted_status_result?.result.tweet.legacy.extended_entities;
+    }
+
+    let media = (repostedTweet?.media || baseTweet?.extended_entities?.media);
+
+    // check if there's a video at given index (/video/<index>)
+    if (index >= 0 && index < media?.length) {
+        media = [media[index]]
+    }
+
+    const getFileExt = (url) => new URL(url).pathname.split(".", 2)[1];
+
+    const proxyMedia = (u, filename) => createStream({
+        service: "twitter",
+        type: "proxy",
+        u, filename,
+    })
+
+    switch (media?.length) {
+        case undefined:
+        case 0:
+            return {
+                error: "fetch.empty"
+            }
+        case 1:
+            if (media[0].type === "photo") {
+                return {
+                    type: "proxy",
+                    isPhoto: true,
+                    filename: `twitter_${id}.${getFileExt(media[0].media_url_https)}`,
+                    urls: `${media[0].media_url_https}?name=4096x4096`
+                }
+            }
+
+            return {
+                type: needsFixing(media[0]) ? "remux" : "proxy",
+                urls: bestQuality(media[0].video_info.variants),
+                filename: `twitter_${id}.mp4`,
+                audioFilename: `twitter_${id}_audio`,
+                isGif: media[0].type === "animated_gif"
+            }
+        default:
+            const proxyThumb = (url, i) =>
+                proxyMedia(url, `twitter_${id}_${i + 1}.${getFileExt(url)}`);
+
+            const picker = media.map((content, i) => {
+                if (content.type === "photo") {
+                    let url = `${content.media_url_https}?name=4096x4096`;
+                    let proxiedImage = proxyThumb(url, i);
+
+                    if (alwaysProxy) url = proxiedImage;
+
+                    return {
+                        type: "photo",
+                        url,
+                        thumb: proxiedImage,
+                    }
+                }
+
+                let url = bestQuality(content.video_info.variants);
+                const shouldRenderGif = content.type === "animated_gif" && toGif;
+                const videoFilename = `twitter_${id}_${i + 1}.mp4`;
+
+                let type = "video";
+                if (shouldRenderGif) type = "gif";
+
+                if (needsFixing(content) || shouldRenderGif) {
+                    url = createStream({
+                        service: "twitter",
+                        type: shouldRenderGif ? "gif" : "remux",
+                        u: url,
+                        filename: videoFilename,
+                    })
+                } else if (alwaysProxy) {
+                    url = proxyMedia(url, videoFilename);
+                }
+
+                return {
+                    type,
+                    url,
+                    thumb: proxyThumb(content.media_url_https, i),
+                }
+            });
+            return { picker };
+    }
+}

api/src/processing/services/vimeo.js

@@ -0,0 +1,171 @@
+import HLS from "hls-parser";
+
+import { env } from "../../config.js";
+import { cleanString, merge } from '../../misc/utils.js';
+
+const resolutionMatch = {
+    "3840": 2160,
+    "2732": 1440,
+    "2560": 1440,
+    "2048": 1080,
+    "1920": 1080,
+    "1366": 720,
+    "1280": 720,
+    "960": 480,
+    "640": 360,
+    "426": 240
+}
+
+const requestApiInfo = (videoId, password) => {
+    if (password) {
+        videoId += `:${password}`
+    }
+
+    return fetch(
+        `https://api.vimeo.com/videos/${videoId}`,
+        {
+            headers: {
+                Accept: 'application/vnd.vimeo.*+json; version=3.4.2',
+                'User-Agent': 'Vimeo/10.19.0 (com.vimeo; build:101900.57.0; iOS 17.5.1) Alamofire/5.9.0 VimeoNetworking/5.0.0',
+                Authorization: 'Basic MTMxNzViY2Y0NDE0YTQ5YzhjZTc0YmU0NjVjNDQxYzNkYWVjOWRlOTpHKzRvMmgzVUh4UkxjdU5FRW80cDNDbDhDWGR5dVJLNUJZZ055dHBHTTB4V1VzaG41bEx1a2hiN0NWYWNUcldSSW53dzRUdFRYZlJEZmFoTTArOTBUZkJHS3R4V2llYU04Qnl1bERSWWxUdXRidjNqR2J4SHFpVmtFSUcyRktuQw==',
+                'Accept-Language': 'en'
+            }
+        }
+    )
+    .then(a => a.json())
+    .catch(() => {});
+}
+
+const compareQuality = (rendition, requestedQuality) => {
+    const quality = parseInt(rendition);
+    return Math.abs(quality - requestedQuality);
+}
+
+const getDirectLink = (data, quality) => {
+    if (!data.files) return;
+
+    const match = data.files
+        .filter(f => f.rendition?.endsWith('p'))
+        .reduce((prev, next) => {
+            const delta = {
+                prev: compareQuality(prev.rendition, quality),
+                next: compareQuality(next.rendition, quality)
+            };
+
+            return delta.prev < delta.next ? prev : next;
+        });
+
+    if (!match) return;
+
+    return {
+        urls: match.link,
+        filenameAttributes: {
+            resolution: `${match.width}x${match.height}`,
+            qualityLabel: match.rendition,
+            extension: "mp4"
+        },
+        bestAudio: "mp3",
+    }
+}
+
+const getHLS = async (configURL, obj) => {
+    if (!configURL) return;
+
+    const api = await fetch(configURL)
+                    .then(r => r.json())
+                    .catch(() => {});
+    if (!api) return { error: "fetch.fail" };
+
+    if (api.video?.duration > env.durationLimit) {
+        return { error: "content.too_long" };
+    }
+
+    const urlMasterHLS = api.request?.files?.hls?.cdns?.akfire_interconnect_quic?.url;
+    if (!urlMasterHLS) return { error: "fetch.fail" };
+
+    const masterHLS = await fetch(urlMasterHLS)
+                            .then(r => r.text())
+                            .catch(() => {});
+
+    if (!masterHLS) return { error: "fetch.fail" };
+
+    const variants = HLS.parse(masterHLS)?.variants?.sort(
+        (a, b) => Number(b.bandwidth) - Number(a.bandwidth)
+    );
+    if (!variants || variants.length === 0) return { error: "fetch.empty" };
+
+    let bestQuality;
+
+    if (obj.quality < resolutionMatch[variants[0]?.resolution?.width]) {
+        bestQuality = variants.find(v =>
+            (obj.quality === resolutionMatch[v.resolution.width])
+        );
+    }
+
+    if (!bestQuality) bestQuality = variants[0];
+
+    const expandLink = (path) => {
+        return new URL(path, urlMasterHLS).toString();
+    };
+
+    let urls = expandLink(bestQuality.uri);
+
+    const audioPath = bestQuality?.audio[0]?.uri;
+    if (audioPath) {
+        urls = [
+            urls,
+            expandLink(audioPath)
+        ]
+    } else if (obj.isAudioOnly) {
+        return { error: "fetch.empty" };
+    }
+
+    return {
+        urls,
+        isM3U8: true,
+        filenameAttributes: {
+            resolution: `${bestQuality.resolution.width}x${bestQuality.resolution.height}`,
+            qualityLabel: `${resolutionMatch[bestQuality.resolution.width]}p`,
+            extension: "mp4"
+        },
+        bestAudio: "mp3",
+    }
+}
+
+export default async function(obj) {
+    let quality = obj.quality === "max" ? 9000 : Number(obj.quality);
+    if (quality < 240) quality = 240;
+    if (!quality || obj.isAudioOnly) quality = 9000;
+
+    const info = await requestApiInfo(obj.id, obj.password);
+    let response;
+
+    if (obj.isAudioOnly) {
+        response = await getHLS(info.config_url, { ...obj, quality });
+    }
+
+    if (!response) response = getDirectLink(info, quality);
+    if (!response) response = { error: "fetch.empty" };
+
+    if (response.error) {
+        return response;
+    }
+
+    const fileMetadata = {
+        title: cleanString(info.name),
+        artist: cleanString(info.user.name),
+    };
+
+    return merge(
+        {
+            fileMetadata,
+            filenameAttributes: {
+                service: "vimeo",
+                id: obj.id,
+                title: fileMetadata.title,
+                author: fileMetadata.artist,
+            }
+        },
+        response
+    );
+}

api/src/processing/services/vine.js

@@ -0,0 +1,15 @@
+export default async function(obj) {
+    let post = await fetch(`https://archive.vine.co/posts/${obj.id}.json`)
+                    .then(r => r.json())
+                    .catch(() => {});
+
+    if (!post) return { error: "fetch.empty" };
+
+    if (post.videoUrl) return {
+        urls: post.videoUrl.replace("http://", "https://"),
+        filename: `vine_${obj.id}.mp4`,
+        audioFilename: `vine_${obj.id}_audio`
+    }
+
+    return { error: "fetch.empty" }
+}

api/src/processing/services/vk.js

@@ -0,0 +1,63 @@
+import { cleanString } from "../../misc/utils.js";
+import { genericUserAgent, env } from "../../config.js";
+
+const resolutions = ["2160", "1440", "1080", "720", "480", "360", "240"];
+
+export default async function(o) {
+    let html, url, quality = o.quality === "max" ? 2160 : o.quality;
+
+    html = await fetch(`https://vk.com/video${o.userId}_${o.videoId}`, {
+        headers: {
+            "user-agent": genericUserAgent
+        }
+    })
+    .then(r => r.arrayBuffer())
+    .catch(() => {});
+
+    if (!html) return { error: "fetch.fail" };
+
+    // decode cyrillic from windows-1251 because vk still uses apis from prehistoric times
+    let decoder = new TextDecoder('windows-1251');
+    html = decoder.decode(html);
+
+    if (!html.includes(`{"lang":`)) return { error: "fetch.empty" };
+
+    let js = JSON.parse('{"lang":' + html.split(`{"lang":`)[1].split(']);')[0]);
+
+    if (Number(js.mvData.is_active_live) !== 0) {
+        return { error: "content.video.live" };
+    }
+
+    if (js.mvData.duration > env.durationLimit) {
+        return { error: "content.too_long" };
+    }
+
+    for (let i in resolutions) {
+        if (js.player.params[0][`url${resolutions[i]}`]) {
+            quality = resolutions[i];
+            break
+        }
+    }
+    if (Number(quality) > Number(o.quality)) quality = o.quality;
+
+    url = js.player.params[0][`url${quality}`];
+
+    let fileMetadata = {
+        title: cleanString(js.player.params[0].md_title.trim()),
+        author: cleanString(js.player.params[0].md_author.trim()),
+    }
+
+    if (url) return {
+        urls: url,
+        filenameAttributes: {
+            service: "vk",
+            id: `${o.userId}_${o.videoId}`,
+            title: fileMetadata.title,
+            author: fileMetadata.author,
+            resolution: `${quality}p`,
+            qualityLabel: `${quality}p`,
+            extension: "mp4"
+        }
+    }
+    return { error: "fetch.empty" }
+}

api/src/processing/services/youtube.js

@@ -0,0 +1,313 @@
+import { fetch } from "undici";
+
+import { Innertube, Session } from "youtubei.js";
+
+import { env } from "../../config.js";
+import { cleanString } from "../../misc/utils.js";
+import { getCookie, updateCookieValues } from "../cookie/manager.js";
+
+const PLAYER_REFRESH_PERIOD = 1000 * 60 * 15; // ms
+
+let innertube, lastRefreshedAt;
+
+const codecMatch = {
+    h264: {
+        videoCodec: "avc1",
+        audioCodec: "mp4a",
+        container: "mp4"
+    },
+    av1: {
+        videoCodec: "av01",
+        audioCodec: "opus",
+        container: "webm"
+    },
+    vp9: {
+        videoCodec: "vp9",
+        audioCodec: "opus",
+        container: "webm"
+    }
+}
+
+const transformSessionData = (cookie) => {
+    if (!cookie)
+        return;
+
+    const values = { ...cookie.values() };
+    const REQUIRED_VALUES = [ 'access_token', 'refresh_token' ];
+
+    if (REQUIRED_VALUES.some(x => typeof values[x] !== 'string')) {
+        return;
+    }
+
+    if (values.expires) {
+        values.expiry_date = values.expires;
+        delete values.expires;
+    } else if (!values.expiry_date) {
+        return;
+    }
+
+    return values;
+}
+
+const cloneInnertube = async (customFetch) => {
+    const shouldRefreshPlayer = lastRefreshedAt + PLAYER_REFRESH_PERIOD < new Date();
+    if (!innertube || shouldRefreshPlayer) {
+        innertube = await Innertube.create({
+            fetch: customFetch
+        });
+        lastRefreshedAt = +new Date();
+    }
+
+    const session = new Session(
+        innertube.session.context,
+        innertube.session.key,
+        innertube.session.api_version,
+        innertube.session.account_index,
+        innertube.session.player,
+        undefined,
+        customFetch ?? innertube.session.http.fetch,
+        innertube.session.cache
+    );
+
+    const cookie = getCookie('youtube_oauth');
+    const oauthData = transformSessionData(cookie);
+
+    if (!session.logged_in && oauthData) {
+        await session.oauth.init(oauthData);
+        session.logged_in = true;
+    }
+
+    if (session.logged_in) {
+        if (session.oauth.shouldRefreshToken()) {
+            await session.oauth.refreshAccessToken();
+        }
+
+        const cookieValues = cookie.values();
+        const oldExpiry = new Date(cookieValues.expiry_date);
+        const newExpiry = new Date(session.oauth.oauth2_tokens.expiry_date);
+
+        if (oldExpiry.getTime() !== newExpiry.getTime()) {
+            updateCookieValues(cookie, {
+                ...session.oauth.client_id,
+                ...session.oauth.oauth2_tokens,
+                expiry_date: newExpiry.toISOString()
+            });
+        }
+    }
+
+    const yt = new Innertube(session);
+    return yt;
+}
+
+export default async function(o) {
+    let yt;
+    try {
+        yt = await cloneInnertube(
+            (input, init) => fetch(input, {
+                ...init,
+                dispatcher: o.dispatcher
+            })
+        );
+    } catch(e) {
+        if (e.message?.endsWith("decipher algorithm")) {
+            return { error: "youtube.decipher" }
+        } else if (e.message?.includes("refresh access token")) {
+            return { error: "youtube.token_expired" }
+        } else throw e;
+    }
+
+    const quality = o.quality === "max" ? "9000" : o.quality;
+
+    let info, isDubbed,
+        format = o.format || "h264";
+
+    function qual(i) {
+        if (!i.quality_label) {
+            return;
+        }
+
+        return i.quality_label.split('p')[0].split('s')[0]
+    }
+
+    try {
+        info = await yt.getBasicInfo(o.id, yt.session.logged_in ? 'ANDROID' : 'IOS');
+    } catch(e) {
+        if (e?.info?.reason === "This video is private") {
+            return { error: "content.video.private" };
+        } else if (e?.message === "This video is unavailable") {
+            return { error: "content.video.unavailable" };
+        } else {
+            return { error: "fetch.fail" };
+        }
+    }
+
+    if (!info) return { error: "fetch.fail" };
+
+    const playability = info.playability_status;
+    const basicInfo = info.basic_info;
+
+    if (playability.status === "LOGIN_REQUIRED") {
+        if (playability.reason.endsWith("bot")) {
+            return { error: "youtube.login" }
+        }
+        if (playability.reason.endsWith("age")) {
+            return { error: "content.video.age" }
+        }
+        if (playability?.error_screen?.reason?.text === "Private video") {
+            return { error: "content.video.private" }
+        }
+    }
+
+    if (playability.status === "UNPLAYABLE") {
+        if (playability?.reason?.endsWith("request limit.")) {
+            return { error: "fetch.rate" }
+        }
+        if (playability?.error_screen?.subreason?.text?.endsWith("in your country")) {
+            return { error: "content.video.region" }
+        }
+        if (playability?.error_screen?.reason?.text === "Private video") {
+            return { error: "content.video.private" }
+        }
+    }
+
+    if (playability.status !== "OK") {
+        return { error: "content.video.unavailable" };
+    }
+    if (basicInfo.is_live) {
+        return { error: "content.video.live" };
+    }
+
+    // return a critical error if returned video is "Video Not Available"
+    // or a similar stub by youtube
+    if (basicInfo.id !== o.id) {
+        return {
+            error: "fetch.fail",
+            critical: true
+        }
+    }
+
+    const filterByCodec = (formats) =>
+        formats
+        .filter(e =>
+            e.mime_type.includes(codecMatch[format].videoCodec)
+            || e.mime_type.includes(codecMatch[format].audioCodec)
+        )
+        .sort((a, b) => Number(b.bitrate) - Number(a.bitrate));
+
+    let adaptive_formats = filterByCodec(info.streaming_data.adaptive_formats);
+
+    if (adaptive_formats.length === 0 && format === "vp9") {
+        format = "h264"
+        adaptive_formats = filterByCodec(info.streaming_data.adaptive_formats)
+    }
+
+    let bestQuality;
+
+    const bestVideo = adaptive_formats.find(i => i.has_video && i.content_length);
+    const hasAudio = adaptive_formats.find(i => i.has_audio && i.content_length);
+
+    if (bestVideo) bestQuality = qual(bestVideo);
+
+    if ((!bestQuality && !o.isAudioOnly) || !hasAudio)
+        return { error: "youtube.codec" };
+
+    if (basicInfo.duration > env.durationLimit)
+        return { error: "content.too_long" };
+
+    const checkBestAudio = (i) => (i.has_audio && !i.has_video);
+
+    let audio = adaptive_formats.find(i =>
+        checkBestAudio(i) && i.is_original
+    );
+
+    if (o.dubLang) {
+        let dubbedAudio = adaptive_formats.find(i =>
+            checkBestAudio(i)
+            && i.language === o.dubLang
+            && i.audio_track
+        )
+
+        if (dubbedAudio && !dubbedAudio?.audio_track?.audio_is_default) {
+            audio = dubbedAudio;
+            isDubbed = true;
+        }
+    }
+
+    if (!audio) {
+        audio = adaptive_formats.find(i => checkBestAudio(i));
+    }
+
+    let fileMetadata = {
+        title: cleanString(basicInfo.title.trim()),
+        artist: cleanString(basicInfo.author.replace("- Topic", "").trim()),
+    }
+
+    if (basicInfo?.short_description?.startsWith("Provided to YouTube by")) {
+        let descItems = basicInfo.short_description.split("\n\n", 5);
+        if (descItems.length === 5) {
+            fileMetadata.album = descItems[2];
+            fileMetadata.copyright = descItems[3];
+            if (descItems[4].startsWith("Released on:")) {
+                fileMetadata.date = descItems[4].replace("Released on: ", '').trim();
+            }
+        }
+    }
+
+    let filenameAttributes = {
+        service: "youtube",
+        id: o.id,
+        title: fileMetadata.title,
+        author: fileMetadata.artist,
+        youtubeDubName: isDubbed ? o.dubLang : false
+    }
+
+    if (audio && o.isAudioOnly) return {
+        type: "audio",
+        isAudioOnly: true,
+        urls: audio.decipher(yt.session.player),
+        filenameAttributes: filenameAttributes,
+        fileMetadata: fileMetadata,
+        bestAudio: format === "h264" ? "m4a" : "opus"
+    }
+
+    const matchingQuality = Number(quality) > Number(bestQuality) ? bestQuality : quality,
+        checkSingle = i =>
+            qual(i) === matchingQuality && i.mime_type.includes(codecMatch[format].videoCodec),
+        checkRender = i =>
+            qual(i) === matchingQuality && i.has_video && !i.has_audio;
+
+    let match, type, urls;
+
+    // prefer good premuxed videos if available
+    if (!o.isAudioOnly && !o.isAudioMuted && format === "h264" && bestVideo.fps <= 30) {
+        match = info.streaming_data.formats.find(checkSingle);
+        type = "proxy";
+        urls = match?.decipher(yt.session.player);
+    }
+
+    const video = adaptive_formats.find(checkRender);
+
+    if (!match && video && audio) {
+        match = video;
+        type = "merge";
+        urls = [
+            video.decipher(yt.session.player),
+            audio.decipher(yt.session.player)
+        ]
+    }
+
+    if (match) {
+        filenameAttributes.qualityLabel = match.quality_label;
+        filenameAttributes.resolution = `${match.width}x${match.height}`;
+        filenameAttributes.extension = codecMatch[format].container;
+        filenameAttributes.youtubeFormat = format;
+        return {
+            type,
+            urls,
+            filenameAttributes,
+            fileMetadata
+        }
+    }
+
+    return { error: "fetch.fail" }
+}

api/src/processing/url.js

@@ -0,0 +1,196 @@
+import psl from "psl";
+import { strict as assert } from "node:assert";
+
+import { env } from "../config.js";
+import { services } from "./service-config.js";
+import { friendlyServiceName } from "./service-alias.js";
+
+function aliasURL(url) {
+    assert(url instanceof URL);
+
+    const host = psl.parse(url.hostname);
+    const parts = url.pathname.split('/');
+
+    switch (host.sld) {
+        case "youtube":
+            if (url.pathname.startsWith('/live/') || url.pathname.startsWith('/shorts/')) {
+                url.pathname = '/watch';
+                // parts := ['', 'live' || 'shorts', id, ...rest]
+                url.search = `?v=${encodeURIComponent(parts[2])}`
+            }
+            break;
+
+        case "youtu":
+            if (url.hostname === 'youtu.be' && parts.length >= 2) {
+                /* youtu.be urls can be weird, e.g. https://youtu.be/<id>//asdasd// still works
+                ** but we only care about the 1st segment of the path */
+                url = new URL(`https://youtube.com/watch?v=${
+                    encodeURIComponent(parts[1])
+                }`)
+            }
+            break;
+
+        case "pin":
+            if (url.hostname === 'pin.it' && parts.length === 2) {
+                url = new URL(`https://pinterest.com/url_shortener/${
+                    encodeURIComponent(parts[1])
+                }`)
+            }
+            break;
+
+        case "vxtwitter":
+        case "fixvx":
+        case "x":
+            if (services.twitter.altDomains.includes(url.hostname)) {
+                url.hostname = 'twitter.com'
+            }
+            break;
+
+        case "twitch":
+            if (url.hostname === 'clips.twitch.tv' && parts.length >= 2) {
+                url = new URL(`https://twitch.tv/_/clip/${parts[1]}`);
+            }
+            break;
+
+        case "bilibili":
+            if (host.tld === 'tv') {
+                url = new URL(`https://bilibili.com/_tv${url.pathname}`);
+            }
+            break;
+
+        case "b23":
+            if (url.hostname === 'b23.tv' && parts.length === 2) {
+                url = new URL(`https://bilibili.com/_shortLink/${parts[1]}`)
+            }
+            break;
+
+        case "dai":
+            if (url.hostname === 'dai.ly' && parts.length === 2) {
+                url = new URL(`https://dailymotion.com/video/${parts[1]}`)
+            }
+            break;
+
+        case "facebook":
+        case "fb":
+            if (url.searchParams.get('v')) {
+                url = new URL(`https://web.facebook.com/user/videos/${url.searchParams.get('v')}`)
+            }
+            if (url.hostname === 'fb.watch') {
+                url = new URL(`https://web.facebook.com/_shortLink/${parts[1]}`)
+            }
+            break;
+
+        case "ddinstagram":
+            if (services.instagram.altDomains.includes(host.domain) && [null, 'd', 'g'].includes(host.subdomain)) {
+                url.hostname = 'instagram.com';
+            }
+            break;
+    }
+
+    return url
+}
+
+function cleanURL(url) {
+    assert(url instanceof URL);
+    const host = psl.parse(url.hostname).sld;
+
+    let stripQuery = true;
+
+    const limitQuery = (param) => {
+        url.search = `?${param}=` + encodeURIComponent(url.searchParams.get(param));
+        stripQuery = false;
+    }
+
+    switch (host) {
+        case "pinterest":
+            url.hostname = 'pinterest.com';
+            break;
+        case "vk":
+            if (url.pathname.includes('/clip') && url.searchParams.get('z')) {
+                limitQuery('z')
+            }
+            break;
+        case "youtube":
+            if (url.searchParams.get('v')) {
+                limitQuery('v')
+            }
+            break;
+        case "rutube":
+            if (url.searchParams.get('p')) {
+                limitQuery('p')
+            }
+            break;
+    }
+
+    if (stripQuery) {
+        url.search = ''
+    }
+
+    url.username = url.password = url.port = url.hash = ''
+
+    if (url.pathname.endsWith('/'))
+        url.pathname = url.pathname.slice(0, -1);
+
+    return url
+}
+
+function getHostIfValid(url) {
+    const host = psl.parse(url.hostname);
+    if (host.error) return;
+
+    const service = services[host.sld];
+    if (!service) return;
+    if ((service.tld ?? 'com') !== host.tld) return;
+
+    const anySubdomainAllowed = service.subdomains === '*';
+    const validSubdomain = [null, 'www', ...(service.subdomains ?? [])].includes(host.subdomain);
+    if (!validSubdomain && !anySubdomainAllowed) return;
+
+    return host.sld;
+}
+
+export function normalizeURL(url) {
+    return cleanURL(
+        aliasURL(
+            new URL(url.replace(/^https\/\//, 'https://'))
+        )
+    );
+}
+
+export function extract(url) {
+    if (!(url instanceof URL)) {
+        url = new URL(url);
+    }
+
+    const host = getHostIfValid(url);
+
+    if (!host) {
+        return { error: "link.invalid" };
+    }
+
+    if (!env.enabledServices.has(host)) {
+        return { error: "service.disabled" };
+    }
+
+    let patternMatch;
+    for (const pattern of services[host].patterns) {
+        patternMatch = pattern.match(
+            url.pathname.substring(1) + url.search
+        );
+
+        if (patternMatch) {
+            break;
+        }
+    }
+
+    if (!patternMatch) {
+        return {
+            error: "link.unsupported",
+            context: {
+                service: friendlyServiceName(host),
+            }
+        };
+    }
+
+    return { host, patternMatch };
+}