<p align = "center"><img alt="Secweb logo" src="https://raw.githubusercontent.com/tmotagam/Secweb/main/Secweb.jpg"></p>
<p align="center"><em>Secweb helps in setting security headers for FastApi and Starlette</em></p>
---
<br>
Secweb is the pack of middlewares for setting security headers for fastapi and can also be used for any framework created on starlette it has 16 middlewares for setting headers of your website and also for your api`s
#### The PermissionsPolicy middleware lies in development branch [here](https://github.com/tmotagam/Secweb/tree/Secweb-Beta#readme)
The list of middleware is as follows:
1. Content Security Policy (CSP)
<br>
2. ExpectCT (deprecated) :warning:
<br>
3. Origin Agent Cluster
<br>
4. Referrer Policy
<br>
5. HTTP Strict Transport Security(HSTS)
<br>
6. X-Content-Type-Options
<br>
7. X-DNS-Prefetch-Control
<br>
8. X-Download-Options
<br>
9. X-Frame
<br>
10. X-Permitted-Cross-Domain-Policies
<br>
11. X-XSS-Protection
<br>
12. Cross-Origin-Embedder-Policy
<br>
13. Cross-Origin-Opener-Policy
<br>
14. Cross-Origin-Resource-Policy
<br>
15. Clear-Site-Data
<br>
16. Cache-Control
## Requirements
* [Python >= 3.7](https://www.python.org/downloads/)
* [Starlette](https://pypi.org/project/starlette/)
## Installation
```powershell
pip install Secweb
```
## Usage
The package Secweb can be used in two different ways
1. To use SecWeb class it includes all the 16 classes together
<br>
2. To use the 16 middleware classes separately
<br>
### SecWeb class
```Python
from Secweb import SecWeb
SecWeb(app=app) # The app is the ASGIapp required by the starlette to give access to the different methods to the class
```
The above example uses all the default headers value that are are preset you can change the values by creating the option dict you can also set flags for nonce generation for csp header using the `script_nonce=True` and `style_nonce=True` flags. For Clear-Site-Data header `Routes=[]` array has been added. It is empty by default.
```Python
from Secweb import SecWeb
SecWeb(app=app, Option={'referrer': {'Referrer-Policy': 'no-referrer'}}, Routes=[], script_nonce=False, style_nonce=False)
```
The Option uses 13 keys for calling middleware classes to set the user-defined policies. 3 middleware classes doesn`t take any values.
The values are as follows:
1. `'csp'` for calling ContentSecurityPolicy class to set the user-defined values
<br>
2. `'expectCt'` for calling ExpectCt class to set the user-defined values :warning:
<br>
3. `'referrer'` for calling ReferrerPolicy class to set the user-defined values
<br>
4. `'xdns'` for calling XDNSPrefetchControl class to set the user-defined values
<br>
5. `'xcdp'` for calling XPermittedCrossDomainPolicies class to set the user-defined values
<br>
6. `'hsts'` for calling HSTS class to set the user-defined values
<br>
7. `'xss'` for calling xXSSProtection class to set the user-defined values
<br>
8. `'xframe'` for calling XFrame class to set the user-defined values
<br>
9. `'coep'` for calling CrossOriginEmbedderPolicy class to set the user-defined values
<br>
10. `'coop'` for calling CrossOriginOpenerPolicy class to set the user-defined values
<br>
11. `'corp'` for calling CrossOriginResourcePolicy class to set the user-defined values
<br>
12. `'clearSiteData'` for calling ClearSiteData class to set the user-defined values
<br>
13. `'cacheControl'` for calling CacheControl class to set the user-defined values
```python
# Example of the values
SecWeb(app=app, Option={'csp': {'default-src': ["'self'"]}, 'xframe': {'X-Frame-Options': 'SAMEORIGIN'}, 'xss': {'X-XSS-Protection': '1; mode=block'}, 'hsts': {'max-age': 4, 'preload': True}, 'xcdp': {'X-Permitted-Cross-Domain-Policies': 'all'}, 'xdns': {'X-DNS-Prefetch-Control': 'on'}, 'referrer': {'Referrer-Policy': 'no-referrer'}, 'expectCt': {'max-age': 128, 'enforce': True, 'report-uri': "https://example.com/example"}, 'coep': {'Cross-Origin-Embedder-Policy': 'require-corp'}, 'coop': {'Cross-Origin-Opener-Policy': 'same-origin-allow-popups'}, 'corp': {'Cross-Origin-Resource-Policy': 'same-site'}, 'clearSiteData': {'cache': True, 'storage': True}, 'cacheControl': {'public': True, 's-maxage': 600}}, Routes=['/login', '/logout/{id}'])
```
### Middleware Classes
#### Content Security Policy (CSP)
ContentSecurityPolicy class sets the csp header
The Nonce_Processor module generates nonce for csp header
Nonce Processor
```python
# Some Code
nonce = Nonce_Processor(DEFAULT_ENTROPY=20) # inject the nonce variable into the jinja or html
# Some Code
```
DEFAULT_ENTROPY is used to set the nonce length.
The nonce processor needs to be called on the route the following example is of FastApi calling the nonce processor on the route
```python
from fastapi import FastAPI
from Secweb.ContentSecurityPolicy import Nonce_Processor
app = FastAPI()
@app.get("/")
async def root():
# some code
nonce = Nonce_Processor(DEFAULT_ENTROPY=20) # inject the nonce variable into the jinja or html
# some more code
```
ContentSecurityPolicy
This is for the FastApi
```python
from fastapi import FastAPI
from Secweb.ContentSecurityPolicy import Nonce_Processor
app = FastAPI()
app.add_middleware(ContentSecurityPolicy, Option={'default-src': ["'self'"], 'base-uri': ["'self'"], 'block-all-mixed-content': []}, script_nonce=False, style_nonce=False)
```
This is for the Starlette
```python
from starlette.applications import Starlette
from Secweb.ContentSecurityPolicy import Nonce_Processor
app = Starlette()
app.add_middleware(ContentSecurityPolicy, Option={'default-src': ["'self'"], 'base-uri': ["'self'"], 'block-all-mixed-content': []}, script_nonce=False, style_nonce=False)
```
script_nonce=False This is the nonce flag for inline Js
style_nonce=False This is the nonce flag for inline css
For more detail on CSP header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
#### ExpectCT :warning:
ExpectCt class sets the ExpectCt header. The default value will not work for ExpectCt class you need to explicitly set the header.
```python
from fastapi import FastAPI
from Secweb.ExpectCt import ExpectCt
app = FastAPI()
app.add_middleware(ExpectCt, Option={'max-age': 128, 'enforce': True, 'report-uri': "https://example.com/example"})
# OR
from starlette.applications import Starlette
from Secweb.ExpectCt import ExpectCt
app = Starlette()
app.add_middleware(ExpectCt, Option={'max-age': 128, 'enforce': True, 'report-uri': "https://example.com/example"})
```
For more detail on ExpectCt header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Expect-CT)
#### Origin Agent Cluster
OriginAgentCluster class sets the Origin-Agent-Cluster header the class takes no parameters
```python
from fastapi import FastAPI
from Secweb.OriginAgentCluster import OriginAgentCluster
app = FastAPI()
app.add_middleware(OriginAgentCluster)
# OR
from starlette.applications import Starlette
from Secweb.OriginAgentCluster import OriginAgentCluster
app = Starlette()
app.add_middleware(OriginAgentCluster)
```
For more detail on Origin-Agent-Cluster header go to this [WHATWG Site](https://html.spec.whatwg.org/multipage/origin.html#origin-keyed-agent-clusters)
#### Referrer Policy
ReferrerPolicy class sets the Referrer-Policy header
```python
from fastapi import FastAPI
from Secweb.ReferrerPolicy import ReferrerPolicy
app = FastAPI()
app.add_middleware(ReferrerPolicy, Option={'Referrer-Policy': 'strict-origin-when-cross-origin'})
# OR
from starlette.applications import Starlette
from Secweb.ReferrerPolicy import ReferrerPolicy
app = Starlette()
app.add_middleware(ReferrerPolicy, Option={'Referrer-Policy': 'strict-origin-when-cross-origin'})
```
For more detail on Referrer-Policy header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy)
#### HTTP Strict Transport Security (HSTS)
HSTS class sets the Strict-Transport-Security header
```python
from fastapi import FastAPI
from Secweb.StrictTransportSecurity import HSTS
app = FastAPI()
app.add_middleware(HSTS, Option={'max-age': 4, 'preload': True})
# OR
from starlette.applications import Starlette
from Secweb.StrictTransportSecurity import HSTS
app = Starlette()
app.add_middleware(HSTS, Option={'max-age': 4, 'preload': True})
```
For more detail on Strict-Transport-Security header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
#### X-Content-Type-Options
XContentTypeOptions class sets the X-Content-Type-Options header the class takes no parameters
```python
from fastapi import FastAPI
from Secweb.XContentTypeOptions import XContentTypeOptions
app = FastAPI()
app.add_middleware(XContentTypeOptions)
# OR
from starlette.applications import Starlette
from Secweb.XContentTypeOptions import XContentTypeOptions
app = Starlette()
app.add_middleware(XContentTypeOptions)
```
For more detail on X-Content-Type-Options header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
#### X-DNS-Prefetch-Control
XDNSPrefetchControl class sets the X-DNS-Prefetch-Control header
```python
from fastapi import FastAPI
from Secweb.XDNSPrefetchControl import XDNSPrefetchControl
app = FastAPI()
app.add_middleware(XDNSPrefetchControl, Option={'X-DNS-Prefetch-Control': 'on'})
# OR
from starlette.applications import Starlette
from Secweb.XDNSPrefetchControl import XDNSPrefetchControl
app = Starlette()
app.add_middleware(XDNSPrefetchControl, Option={'X-DNS-Prefetch-Control': 'off'})
```
For more detail on X-DNS-Prefetch-Control header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control)
#### X-Download-Options
XDownloadOptions class sets the X-Download-Options header the class takes no parameter
```python
from fastapi import FastAPI
from Secweb.XDownloadOptions import XDownloadOptions
app = FastAPI()
app.add_middleware(XDownloadOptions)
# OR
from starlette.applications import Starlette
from Secweb.XDownloadOptions import XDownloadOptions
app = Starlette()
app.add_middleware(XDownloadOptions)
```
For more detail on X-Download-Options header go to this [NWebsec Site](https://www.nwebsec.com/HttpHeaders/SecurityHeaders/XDownloadOptions)
#### X-Frame
XFrame class sets the X-Frame-Options header
```python
from fastapi import FastAPI
from Secweb.XFrameOptions import XFrame
app = FastAPI()
app.add_middleware(XFrame, Option={'X-Frame-Options': 'DENY'})
# OR
from starlette.applications import Starlette
from Secweb.XFrameOptions import XFrame
app = Starlette()
app.add_middleware(XFrame, Option={'X-Frame-Options': 'DENY'})
```
For more detail on X-Frame-Options header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
#### X-Permitted-Cross-Domain-Policies
XPermittedCrossDomainPolicies class sets the X-Permitted-Cross-Domain-Policies header
```python
from fastapi import FastAPI
from Secweb.XPermittedCrossDomainPolicies import XPermittedCrossDomainPolicies
app = FastAPI()
app.add_middleware(XPermittedCrossDomainPolicies, Option={'X-Permitted-Cross-Domain-Policies': 'none'})
# OR
from starlette.applications import Starlette
from Secweb.XPermittedCrossDomainPolicies import XPermittedCrossDomainPolicies
app = Starlette()
app.add_middleware(XPermittedCrossDomainPolicies, Option={'X-Permitted-Cross-Domain-Policies': 'none'})
```
For more detail on X-Permitted-Cross-Domain-Policies header go to this [OWASP Site](https://owasp.org/www-project-secure-headers/#x-permitted-cross-domain-policies)
#### X-XSS-Protection
xXSSProtection class sets the X-XSS-Protection header
```python
from fastapi import FastAPI
from Secweb.xXSSProtection import xXSSProtection
app = FastAPI()
app.add_middleware(xXSSProtection, Option={'X-XSS-Protection': '0'})
# OR
from starlette.applications import Starlette
from Secweb.xXSSProtection import xXSSProtection
app = Starlette()
app.add_middleware(xXSSProtection, Option={'X-XSS-Protection': '0'})
```
For more detail on X-XSS-Protection header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
#### Cross Origin Embedder Policy
CrossOriginEmbedderPolicy class sets the Cross Origin Embedder Policy header
```python
from fastapi import FastAPI
from Secweb.CrossOriginEmbedderPolicy import CrossOriginEmbedderPolicy
app = FastAPI()
app.add_middleware(CrossOriginEmbedderPolicy, Option={'Cross-Origin-Embedder-Policy': 'unsafe-none'})
# OR
from starlette.applications import Starlette
from Secweb.CrossOriginEmbedderPolicy import CrossOriginEmbedderPolicy
app = Starlette()
app.add_middleware(CrossOriginEmbedderPolicy, Option={'Cross-Origin-Embedder-Policy': 'unsafe-none'})
```
For more detail on Cross Origin Embedder Policy header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy)
#### Cross Origin Opener Policy
CrossOriginOpenerPolicy class sets the Cross Origin Opener Policy header
```python
from fastapi import FastAPI
from Secweb.CrossOriginOpenerPolicy import CrossOriginOpenerPolicy
app = FastAPI()
app.add_middleware(CrossOriginOpenerPolicy, Option={'Cross-Origin-Opener-Policy': 'unsafe-none'})
# OR
from starlette.applications import Starlette
from Secweb.CrossOriginOpenerPolicy import CrossOriginOpenerPolicy
app = Starlette()
app.add_middleware(CrossOriginOpenerPolicy, Option={'Cross-Origin-Opener-Policy': 'unsafe-none'})
```
For more detail on Cross Origin Opener Policy header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy)
#### Cross Origin Resource Policy
CrossOriginResourcePolicy class sets the Cross Origin Resource Policy header. You have to call the CrossOriginResourcePolicy class explicitly by providing the 'corp' key in the Option dictionary.
```python
from fastapi import FastAPI
from Secweb.CrossOriginResourcePolicy import CrossOriginResourcePolicy
app = FastAPI()
app.add_middleware(CrossOriginResourcePolicy, Option={'Cross-Origin-Resource-Policy': 'same-site'})
# OR
from starlette.applications import Starlette
from Secweb.CrossOriginResourcePolicy import CrossOriginResourcePolicy
app = Starlette()
app.add_middleware(CrossOriginResourcePolicy, Option={'Cross-Origin-Resource-Policy': 'same-site'})
```
For more detail on Cross Origin Resource Policy header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Resource-Policy)
#### Clear Site Data
ClearSiteData class sets the Clear-Site-Data header. In this class the routes array is compulsory so that the header can only be applied to the specified route as it clears every data on the users browser you can add static, dynamic routes like shown below.
```python
from fastapi import FastAPI
from Secweb.ClearSiteData import ClearSiteData
app = FastAPI()
app.add_middleware(ClearSiteData, Option={'cookies': True}, Routes=['/login', '/logout/{id}'])
# OR
from starlette.applications import Starlette
from Secweb.ClearSiteData import ClearSiteData
app = Starlette()
app.add_middleware(ClearSiteData, Option={'cookies': True}, Routes=['/login', '/logout/{id}'])
```
For more detail on Clear Site Data Header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Clear-Site-Data)
#### Cache Control
CacheControl class sets the Cache-Control header. This is useful for controlling cached data on user`s browser
```python
from fastapi import FastAPI
from Secweb.CacheControl import CacheControl
app = FastAPI()
app.add_middleware(CacheControl, Option={'s-maxage': 600, 'public': True})
# OR
from starlette.applications import Starlette
from Secweb.CacheControl import CacheControl
app = Starlette()
app.add_middleware(CacheControl, Option={'s-maxage': 600, 'public': True})
```
For more detail on Cache Control Header go to this [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control)
## Contributing
Pull requests and Issues are welcome. For major changes, please open an issue first to discuss what you would like to change.
<br>
[Github](https://github.com/tmotagam/Secweb)
## License
[MLP 2.0](https://www.mozilla.org/en-US/MPL/2.0/)
## Secweb Icon
[Secweb Icon](https://github.com/tmotagam/Secweb/blob/main/Secweb.jpg) © 2021 - 2022 by [Motagamwala Taha Arif Ali](https://github.com/tmotagam) is licensed under [Attribution-NonCommercial-NoDerivatives 4.0 International](https://creativecommons.org/licenses/by-nc-nd/4.0/?ref=chooser-v1)