sanitize html for statuses + instance (#97)
* sanitize html for statuses + instance * sanitization
This commit is contained in:
Tobi Smethurst
GitHub
parent
846057f0d6
commit
bdba3ff9a9
36
README.md
36
README.md
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@ -26,9 +26,7 @@ Tusky | Pinafore
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:-----------------------------------------------------------:|:------------------------------------------------------------------:
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 | 
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### Customizable
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#### Granular post settings
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### Granular post settings
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You should be able to choose how your posts can be interacted with:
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@ -37,40 +35,36 @@ You should be able to choose how your posts can be interacted with:
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* 'Likeable' toggle.
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* 'Replyable' toggle.
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#### Easy customizability for admins
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### Easy customizability for admins
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* Adjustable post length.
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* Media upload size settings.
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### Convenient
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#### LetsEncrypt
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### LetsEncrypt
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Built-in, automatic support for secure HTTPS with [LetsEncrypt](https://letsencrypt.org/).
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#### Light footprint and good performance
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### Light footprint and good performance
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Plays nice with lower-powered machines like Raspberry Pi, old laptops and tiny VPSes.
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#### Easy to deploy
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### Easy to deploy
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No external dependencies apart from a database. Just download the binary + assets (or Docker container), and run.
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### Secure
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#### HTTP signature authentication
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### HTTP signature authentication
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Protect your data.
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#### User Safety
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### User Safety
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Strict privacy enforcement for posts and strict blocking logic.
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#### Subscribeable and shareable allow/denylists for federation
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### Subscribeable and shareable allow/denylists for federation
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Import and export allowlists and denylists. Subscribe to community-created blocklists (think Adblocker, but for federation!).
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#### Various federation modes
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### Various federation modes
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* 'Normal' federation; discover new servers.
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* Allowlist-only federation; choose which servers you talk to.
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@ -82,6 +76,7 @@ These cool things will be implemented if time allows (because we really want the
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* **Groups** and group posting!
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* Reputation-based 'slow' federation.
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* Community decision making for federation and moderation actions.
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* User-selectable custom templates for rendering public posts:
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* Twitter-style
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* Blogpost
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@ -131,6 +126,7 @@ The following libraries and frameworks are used by GoToSocial, with gratitude
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* [google/uuid](https://github.com/google/uuid); UUID generation. [BSD-3-Clause License](https://spdx.org/licenses/BSD-3-Clause.html)
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* [gorilla/websocket](https://github.com/gorilla/websocket); Websocket connectivity. [BSD-2-Clause License](https://spdx.org/licenses/BSD-2-Clause.html).
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* [h2non/filetype](https://github.com/h2non/filetype); filetype checking. [MIT License](https://spdx.org/licenses/MIT.html).
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* [microcosm-cc/bluemonday](https://github.com/microcosm-cc/bluemonday); HTML user-input sanitization. [BSD-3-Clause License](https://spdx.org/licenses/BSD-3-Clause.html).
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* [oklog/ulid](https://github.com/oklog/ulid); sequential, database-friendly ID generation. [Apache-2.0 License](https://spdx.org/licenses/Apache-2.0.html).
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* [sirupsen/logrus](https://github.com/sirupsen/logrus); logging. [MIT License](https://spdx.org/licenses/MIT.html).
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* [stretchr/testify](https://github.com/stretchr/testify); test framework. [MIT License](https://spdx.org/licenses/MIT.html).
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@ -139,17 +135,17 @@ The following libraries and frameworks are used by GoToSocial, with gratitude
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* [urfave/cli](https://github.com/urfave/cli); command-line interface framework. [MIT License](https://spdx.org/licenses/MIT.html).
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* [wagslane/go-password-validator](https://github.com/wagslane/go-password-validator); password strength validation. [MIT License](https://spdx.org/licenses/MIT.html).
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### Image Attribution
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Sloth logo made by [Freepik](https://www.freepik.com) from [www.flaticon.com](https://www.flaticon.com/).
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## Sponsorship + Funding
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Currently, this project is funded using Liberapay, to put bread on the table while work continues on it.
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If you want to sponsor this project, you can do so [here](https://liberapay.com/dumpsterqueer/)! `<3`
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### Image Attribution
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Sloth logo made by [Freepik](https://www.freepik.com) from [www.flaticon.com](https://www.flaticon.com/).
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### License
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## License
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GoToSocial is licensed under the [GNU AGPL v3 LICENSE](LICENSE).
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2
go.mod
2
go.mod
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@ -32,6 +32,7 @@ require (
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github.com/json-iterator/go v1.1.11 // indirect
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github.com/leodido/go-urn v1.2.1 // indirect
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github.com/mattn/go-isatty v0.0.13 // indirect
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github.com/microcosm-cc/bluemonday v1.0.15
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github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
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github.com/modern-go/reflect2 v1.0.1 // indirect
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github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
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@ -50,7 +51,6 @@ require (
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github.com/vmihailenco/msgpack/v5 v5.3.4 // indirect
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github.com/wagslane/go-password-validator v0.3.0
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golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a
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golang.org/x/net v0.0.0-20210525063256-abc453219eb5 // indirect
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golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea // indirect
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golang.org/x/text v0.3.6
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gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
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11
go.sum
11
go.sum
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@ -4,6 +4,9 @@ github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
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github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
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github.com/andybalholm/brotli v1.0.0 h1:7UCwP93aiSfvWpapti8g88vVVGp2qqtGyePsSuDafo4=
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github.com/andybalholm/brotli v1.0.0/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
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github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
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github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
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github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
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github.com/boj/redistore v0.0.0-20180917114910-cd5dcc76aeff/go.mod h1:+RTT1BOk5P97fT2CiHkbFQwkK3mjsFAP6zCYV2aXtjw=
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github.com/bradfitz/gomemcache v0.0.0-20190329173943-551aad21a668/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
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github.com/bradleypeabody/gorilla-sessions-memcache v0.0.0-20181103040241-659414f458e1/go.mod h1:dkChI7Tbtx7H1Tj7TqGSZMOeGpMP5gLHtjroHd4agiI=
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@ -151,6 +154,8 @@ github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGa
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github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
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github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
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github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
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github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY=
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github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c=
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github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
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github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
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github.com/gorilla/sessions v1.1.1/go.mod h1:8KCfur6+4Mqcc6S0FEfKuN15Vl5MgXW92AE8ovaJD0w=
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@ -194,6 +199,8 @@ github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Ky
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github.com/mattn/go-isatty v0.0.13 h1:qdl+GuBjcsKKDco5BsxPJlId98mSWNKqYA+Co0SC1yA=
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github.com/mattn/go-isatty v0.0.13/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
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github.com/memcachier/mc v2.0.1+incompatible/go.mod h1:7bkvFE61leUBvXz+yxsOnGBQSZpBSPIMUQSmmSHvuXc=
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github.com/microcosm-cc/bluemonday v1.0.15 h1:J4uN+qPng9rvkBZBoBb8YGR+ijuklIMpSOZZLjYpbeY=
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github.com/microcosm-cc/bluemonday v1.0.15/go.mod h1:ZLvAzeakRwrGnzQEvstVzVt3ZpqOF2+sdFr0Om+ce30=
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github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
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github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
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github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
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@ -368,8 +375,8 @@ golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwY
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golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
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golang.org/x/net v0.0.0-20210525063256-abc453219eb5 h1:wjuX4b5yYQnEQHzd+CBcrcC6OVR2J1CN6mUy0oSxIPo=
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golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
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golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@ -23,6 +23,7 @@ import (
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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"github.com/superseriousbusiness/oauth2/v4"
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)
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@ -44,7 +45,7 @@ func (p *processor) Create(applicationToken oauth2.TokenInfo, application *gtsmo
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}
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l.Trace("creating new username and account")
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user, err := p.db.NewSignup(form.Username, reason, p.config.AccountsConfig.RequireApproval, form.Email, form.Password, form.IP, form.Locale, application.ID)
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user, err := p.db.NewSignup(form.Username, util.RemoveHTML(reason), p.config.AccountsConfig.RequireApproval, form.Email, form.Password, form.IP, form.Locale, application.ID)
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if err != nil {
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return nil, fmt.Errorf("error creating new signup in the database: %s", err)
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}
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@ -50,7 +50,8 @@ func (p *processor) Update(account *gtsmodel.Account, form *apimodel.UpdateCrede
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if err := util.ValidateDisplayName(*form.DisplayName); err != nil {
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return nil, err
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}
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if err := p.db.UpdateOneByID(account.ID, "display_name", *form.DisplayName, >smodel.Account{}); err != nil {
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displayName := util.RemoveHTML(*form.DisplayName) // no html allowed in display name
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if err := p.db.UpdateOneByID(account.ID, "display_name", displayName, >smodel.Account{}); err != nil {
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return nil, err
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}
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}
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@ -59,7 +60,8 @@ func (p *processor) Update(account *gtsmodel.Account, form *apimodel.UpdateCrede
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if err := util.ValidateNote(*form.Note); err != nil {
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return nil, err
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}
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if err := p.db.UpdateOneByID(account.ID, "note", *form.Note, >smodel.Account{}); err != nil {
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note := util.SanitizeHTML(*form.Note) // html OK in note but sanitize it
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if err := p.db.UpdateOneByID(account.ID, "note", note, >smodel.Account{}); err != nil {
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return nil, err
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}
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}
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@ -28,6 +28,7 @@ import (
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/id"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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func (p *processor) DomainBlockCreate(account *gtsmodel.Account, domain string, obfuscate bool, publicComment string, privateComment string, subscriptionID string) (*apimodel.DomainBlock, gtserror.WithCode) {
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@ -51,8 +52,8 @@ func (p *processor) DomainBlockCreate(account *gtsmodel.Account, domain string,
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ID: blockID,
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Domain: domain,
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CreatedByAccountID: account.ID,
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PrivateComment: privateComment,
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PublicComment: publicComment,
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PrivateComment: util.RemoveHTML(privateComment),
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PublicComment: util.RemoveHTML(publicComment),
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Obfuscate: obfuscate,
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SubscriptionID: subscriptionID,
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}
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@ -60,7 +60,7 @@ func (p *processor) InstancePatch(form *apimodel.InstanceSettingsUpdateRequest)
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if err := util.ValidateSiteTitle(*form.Title); err != nil {
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return nil, gtserror.NewErrorBadRequest(err, fmt.Sprintf("site title invalid: %s", err))
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}
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i.Title = *form.Title
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i.Title = util.RemoveHTML(*form.Title) // don't allow html in site title
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}
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// validate & update site contact account if it's set on the form
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@ -110,7 +110,7 @@ func (p *processor) InstancePatch(form *apimodel.InstanceSettingsUpdateRequest)
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if err := util.ValidateSiteShortDescription(*form.ShortDescription); err != nil {
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return nil, gtserror.NewErrorBadRequest(err, err.Error())
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}
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i.ShortDescription = *form.ShortDescription
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i.ShortDescription = util.SanitizeHTML(*form.ShortDescription) // html is OK in site description, but we should sanitize it
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}
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// validate & update site description if it's set on the form
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@ -118,7 +118,7 @@ func (p *processor) InstancePatch(form *apimodel.InstanceSettingsUpdateRequest)
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if err := util.ValidateSiteDescription(*form.Description); err != nil {
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return nil, gtserror.NewErrorBadRequest(err, err.Error())
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}
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i.Description = *form.Description
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i.Description = util.SanitizeHTML(*form.Description) // html is OK in site description, but we should sanitize it
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}
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// validate & update site terms if it's set on the form
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@ -126,7 +126,7 @@ func (p *processor) InstancePatch(form *apimodel.InstanceSettingsUpdateRequest)
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if err := util.ValidateSiteTerms(*form.Terms); err != nil {
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return nil, gtserror.NewErrorBadRequest(err, err.Error())
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}
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i.Terms = *form.Terms
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i.Terms = util.SanitizeHTML(*form.Terms) // html is OK in site terms, but we should sanitize it
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}
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// process avatar if provided
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@ -26,6 +26,7 @@ import (
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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func (p *processor) Create(account *gtsmodel.Account, form *apimodel.AttachmentRequest) (*apimodel.Attachment, error) {
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@ -53,7 +54,7 @@ func (p *processor) Create(account *gtsmodel.Account, form *apimodel.AttachmentR
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// TODO: handle this inside mediaHandler.ProcessAttachment (just pass more params to it)
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// first description
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attachment.Description = form.Description
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attachment.Description = util.RemoveHTML(form.Description) // remove any HTML from the image description
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// now parse the focus parameter
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focusx, focusy, err := parseFocus(form.Focus)
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@ -26,6 +26,7 @@ import (
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
|
||||
|
||||
func (p *processor) Update(account *gtsmodel.Account, mediaAttachmentID string, form *apimodel.AttachmentUpdateRequest) (*apimodel.Attachment, gtserror.WithCode) {
|
||||
|
|
@ -43,7 +44,7 @@ func (p *processor) Update(account *gtsmodel.Account, mediaAttachmentID string,
|
|||
}
|
||||
|
||||
if form.Description != nil {
|
||||
attachment.Description = *form.Description
|
||||
attachment.Description = util.RemoveHTML(*form.Description)
|
||||
if err := p.db.UpdateByID(mediaAttachmentID, attachment); err != nil {
|
||||
return nil, gtserror.NewErrorInternalError(fmt.Errorf("database error updating description: %s", err))
|
||||
}
|
||||
|
|
|
|||
|
|
@ -29,7 +29,7 @@ func (p *processor) Create(account *gtsmodel.Account, application *gtsmodel.Appl
|
|||
Local: true,
|
||||
AccountID: account.ID,
|
||||
AccountURI: account.URI,
|
||||
ContentWarning: form.SpoilerText,
|
||||
ContentWarning: util.RemoveHTML(form.SpoilerText),
|
||||
ActivityStreamsType: gtsmodel.ActivityStreamsNote,
|
||||
Sensitive: form.Sensitive,
|
||||
Language: form.Language,
|
||||
|
|
|
|||
|
|
@ -264,6 +264,10 @@ func (p *processor) processContent(form *apimodel.AdvancedStatusCreateForm, acco
|
|||
// replace newlines with breaks
|
||||
content = strings.ReplaceAll(content, "\n", "<br />")
|
||||
|
||||
status.Content = content
|
||||
// sanitize html to remove any dodgy scripts or other disallowed elements
|
||||
clean := util.SanitizeHTML(content)
|
||||
|
||||
// set the content as the shiny clean parsed content
|
||||
status.Content = clean
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,50 @@
|
|||
/*
|
||||
GoToSocial
|
||||
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
|
||||
|
||||
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 <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
package util
|
||||
|
||||
import (
|
||||
"github.com/microcosm-cc/bluemonday"
|
||||
)
|
||||
|
||||
// '[A]llows a broad selection of HTML elements and attributes that are safe for user generated content.
|
||||
// Note that this policy does not allow iframes, object, embed, styles, script, etc.
|
||||
// An example usage scenario would be blog post bodies where a variety of formatting is expected along with the potential for TABLEs and IMGs.'
|
||||
//
|
||||
// Source: https://github.com/microcosm-cc/bluemonday#usage
|
||||
var regular *bluemonday.Policy = bluemonday.UGCPolicy().
|
||||
RequireNoReferrerOnLinks(true).
|
||||
RequireNoFollowOnLinks(true).
|
||||
RequireCrossOriginAnonymous(true)
|
||||
|
||||
// '[C]an be thought of as equivalent to stripping all HTML elements and their attributes as it has nothing on its allowlist.
|
||||
// An example usage scenario would be blog post titles where HTML tags are not expected at all
|
||||
// and if they are then the elements and the content of the elements should be stripped. This is a very strict policy.'
|
||||
//
|
||||
// Source: https://github.com/microcosm-cc/bluemonday#usage
|
||||
var strict *bluemonday.Policy = bluemonday.StrictPolicy()
|
||||
|
||||
// SanitizeHTML cleans up HTML in the given string, allowing through only safe HTML elements.
|
||||
func SanitizeHTML(in string) string {
|
||||
return regular.Sanitize(in)
|
||||
}
|
||||
|
||||
// RemoveHTML removes all HTML from the given string.
|
||||
func RemoveHTML(in string) string {
|
||||
return strict.Sanitize(in)
|
||||
}
|
||||
Loading…
Reference in New Issue