GitHub - tmotagam/Secweb: Secweb is a pack of security middlewares for fastApi and starlette server it includes CSP, HSTS, and many more (original) (raw)
Secweb helps in setting security headers for FastApi and Starlette
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
Features
- Lightweight and fast
- No External dependency
- Use recommended headers from OWASP and MDN
- Recommended by OWASP
The list of middleware is as follows:
- Content Security Policy (CSP)
- Origin Agent Cluster
- Referrer Policy
- HTTP Strict Transport Security(HSTS)
- HTTP Strict Transport Security(HSTS) for WebSockets
- X-Content-Type-Options
- X-DNS-Prefetch-Control
- X-Download-Options
- X-Frame
- X-Permitted-Cross-Domain-Policies
- X-XSS-Protection
- Cross-Origin-Embedder-Policy
- Cross-Origin-Opener-Policy
- Cross-Origin-Resource-Policy
- Clear-Site-Data
- Cache-Control
Requirements
Installation
Usage
The package Secweb can be used in two different ways:
- Use the SecWeb class - it includes all the 16 classes together
- Use the 16 middleware classes separately
SecWeb class
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 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. The report_only
flag is added for csp report only header. For Clear-Site-Data header Routes=[]
array is used for applying the header, it is empty by default.
from Secweb import SecWeb
SecWeb(app=app, Option={'referrer': ['no-referrer']}, Routes=[], script_nonce=False, style_nonce=False, report_only=False)
The Option
-parameter uses 16 keys for calling middleware classes to set the user-defined policies or activating or deactivating headers.
Note: Activating/Deactivating the header can only be done in SecWeb class in Option param
from Secweb import SecWeb
Secweb(app=app, Option={'referrer': False, 'xframe': False})
The values are as follows:
'csp'
for calling ContentSecurityPolicy class to set the user-defined values or activate/deactivate the header'referrer'
for calling ReferrerPolicy class to set the user-defined values or activate/deactivate the header'xdns'
for calling XDNSPrefetchControl class to set the user-defined values or activate/deactivate the header'xcdp'
for calling XPermittedCrossDomainPolicies class to set the user-defined values or activate/deactivate the header'hsts'
for calling HSTS class to set the user-defined values or activate/deactivate the header'wshsts'
for calling WsHSTS class to set the user-defined values for Websockets or activate/deactivate the header'xframe'
for calling XFrame class to set the user-defined values or activate/deactivate the header'coep'
for calling CrossOriginEmbedderPolicy class to set the user-defined values or activate/deactivate the header'coop'
for calling CrossOriginOpenerPolicy class to set the user-defined values or activate/deactivate the header'corp'
for calling CrossOriginResourcePolicy class to set the user-defined values or activate/deactivate the header'clearSiteData'
for calling ClearSiteData class to set the user-defined values or activate/deactivate the header'cacheControl'
for calling CacheControl class to set the user-defined values or activate/deactivate the header'xcto'
for activating/deactivating X-Content-Type-Options header'xdo'
for activating/deactivating X-Download-Options header'xss'
for activating/deactivating x-xss-protection header'oac'
for activating/deactivating Origin-Agent-Cluster header
Example of all values
SecWeb(app=app, Option={'csp': {'default-src': ["'self'"]}, 'xframe':'SAMEORIGIN', 'hsts': {'max-age': 4, 'preload': True}, 'wshsts': {'max-age': 10, 'preload': True},'xcdp': 'all', 'xdns': 'on', 'referrer': ['no-referrer'], 'coep':'require-corp', 'coop':'same-origin-allow-popups', 'corp': 'same-site', 'clearSiteData': {'cache': True, 'storage': True}, 'cacheControl': {'public': True, 's-maxage': 600}, 'xss': False}, Routes=['/login/{id}', '/logout/{id:uuid}/username/{username:string}'])
Middleware Classes
Content Security Policy (CSP)
Nonce Processor
The Nonce_Processor module generates nonce for csp header
Some Code
nonce = Nonce_Processor(DEFAULT_ENTROPY=90) # 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
from fastapi import FastAPI from Secweb.ContentSecurityPolicy import Nonce_Processor
app = FastAPI()
@app.get("/")
async def root():
some code
nonce = Nonce_Processor(DEFAULT_ENTROPY=90) # inject the nonce variable into the jinja or html
some more code
ContentSecurityPolicy class sets the csp header.
For FastApi server
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, report_only=False)
For Starlette server
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, report_only=False)
script_nonce=False
: nonce flag for inline Javascriptstyle_nonce=False
: nonce flag for inline cssreport_only=False
: report only flag which makes csp report only header
For more detail on CSP header go to MDN Docs.
For more detail on CSP-report-only header go to MDN Docs.
Origin Agent Cluster
OriginAgentCluster class sets the Origin-Agent-Cluster header. It takes no parameters.
For FastApi server
from fastapi import FastAPI from Secweb.OriginAgentCluster import OriginAgentCluster
app = FastAPI() app.add_middleware(OriginAgentCluster)
For Starlette server
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 WHATWG Site.
Referrer Policy
ReferrerPolicy class sets the Referrer-Policy header
For FastApi server
from fastapi import FastAPI from Secweb.ReferrerPolicy import ReferrerPolicy
app = FastAPI()
app.add_middleware(ReferrerPolicy, Option=['strict-origin-when-cross-origin'])
For Starlette server
from starlette.applications import Starlette from Secweb.ReferrerPolicy import ReferrerPolicy
app = Starlette() app.add_middleware(ReferrerPolicy, Option=['strict-origin-when-cross-origin'])
For more detail on Referrer-Policy header go to MDN Docs.
HTTP Strict Transport Security (HSTS)
HSTS class sets the Strict-Transport-Security header
For FastApi server
from fastapi import FastAPI from Secweb.StrictTransportSecurity import HSTS
app = FastAPI()
app.add_middleware(HSTS, Option={'max-age': 4, 'preload': True})
For Starlette server
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 MDN Docs.
HTTP Strict Transport Security (HSTS) for WebSockets
HSTS class sets the Strict-Transport-Security header for Websockets
For FastApi server
from fastapi import FastAPI from Secweb.WsStrictTransportSecurity import WsHSTS
app = FastAPI()
app.add_middleware(WsHSTS, Option={'max-age': 4, 'preload': True})
For Starlette server
from starlette.applications import Starlette from Secweb.WsStrictTransportSecurity import WsHSTS
app = Starlette()
app.add_middleware(WsHSTS, Option={'max-age': 4, 'preload': True})
For more detail on Strict-Transport-Security header go to MDN Docs.
X-Content-Type-Options
XContentTypeOptions class sets the X-Content-Type-Options header the class takes no parameters
For FastApi server
from fastapi import FastAPI from Secweb.XContentTypeOptions import XContentTypeOptions
app = FastAPI()
app.add_middleware(XContentTypeOptions)
For Starlette server
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 MDN Docs.
X-DNS-Prefetch-Control
XDNSPrefetchControl class sets the X-DNS-Prefetch-Control header
For FastApi server
from fastapi import FastAPI from Secweb.XDNSPrefetchControl import XDNSPrefetchControl
app = FastAPI()
app.add_middleware(XDNSPrefetchControl, Option='on')
For Starlette server
from starlette.applications import Starlette from Secweb.XDNSPrefetchControl import XDNSPrefetchControl
app = Starlette()
app.add_middleware(XDNSPrefetchControl, Option='off')
For more detail on X-DNS-Prefetch-Control header go to MDN Docs.
X-Download-Options
XDownloadOptions class sets the X-Download-Options header the class takes no parameter
For FastApi server
from fastapi import FastAPI from Secweb.XDownloadOptions import XDownloadOptions
app = FastAPI()
app.add_middleware(XDownloadOptions)
For Starlette server
from starlette.applications import Starlette from Secweb.XDownloadOptions import XDownloadOptions
app = Starlette()
app.add_middleware(XDownloadOptions)
X-Frame
XFrame class sets the X-Frame-Options header
For FastApi server
from fastapi import FastAPI from Secweb.XFrameOptions import XFrame
app = FastAPI()
app.add_middleware(XFrame, Option='DENY')
For Starlette server
from starlette.applications import Starlette from Secweb.XFrameOptions import XFrame
app = Starlette()
app.add_middleware(XFrame, Option='DENY')
For more detail on X-Frame-Options header go to MDN Docs.
X-Permitted-Cross-Domain-Policies
XPermittedCrossDomainPolicies class sets the X-Permitted-Cross-Domain-Policies header
For FastApi server
from fastapi import FastAPI from Secweb.XPermittedCrossDomainPolicies import XPermittedCrossDomainPolicies
app = FastAPI()
app.add_middleware(XPermittedCrossDomainPolicies, Option='none')
For Starlette server
from starlette.applications import Starlette from Secweb.XPermittedCrossDomainPolicies import XPermittedCrossDomainPolicies
app = Starlette()
app.add_middleware(XPermittedCrossDomainPolicies, Option='none')
For more detail on X-Permitted-Cross-Domain-Policies header go to OWASP Site.
X-XSS-Protection
xXSSProtection class sets the X-XSS-Protection header the class takes no parameter
For FastApi server
from fastapi import FastAPI from Secweb.xXSSProtection import xXSSProtection
app = FastAPI()
app.add_middleware(xXSSProtection)
For Starlette server
from starlette.applications import Starlette from Secweb.xXSSProtection import xXSSProtection
app = Starlette()
app.add_middleware(xXSSProtection)
For more detail on X-XSS-Protection header go to MDN Docs.
Cross Origin Embedder Policy
CrossOriginEmbedderPolicy class sets the Cross Origin Embedder Policy header
For FastApi server
from fastapi import FastAPI from Secweb.CrossOriginEmbedderPolicy import CrossOriginEmbedderPolicy
app = FastAPI()
app.add_middleware(CrossOriginEmbedderPolicy, Option='unsafe-none')
For Starlette server
from starlette.applications import Starlette from Secweb.CrossOriginEmbedderPolicy import CrossOriginEmbedderPolicy
app = Starlette()
app.add_middleware(CrossOriginEmbedderPolicy, Option='unsafe-none')
For more detail on Cross Origin Embedder Policy header go to MDN Docs.
Cross Origin Opener Policy
CrossOriginOpenerPolicy class sets the Cross Origin Opener Policy header
For FastApi server
from fastapi import FastAPI from Secweb.CrossOriginOpenerPolicy import CrossOriginOpenerPolicy
app = FastAPI()
app.add_middleware(CrossOriginOpenerPolicy, Option='unsafe-none')
For Starlette server
from starlette.applications import Starlette from Secweb.CrossOriginOpenerPolicy import CrossOriginOpenerPolicy
app = Starlette()
app.add_middleware(CrossOriginOpenerPolicy, Option='unsafe-none')
For more detail on Cross Origin Opener Policy header go to MDN Docs.
Cross Origin Resource Policy
CrossOriginResourcePolicy class sets the Cross Origin Resource Policy header
For FastApi server
from fastapi import FastAPI from Secweb.CrossOriginResourcePolicy import CrossOriginResourcePolicy
app = FastAPI()
app.add_middleware(CrossOriginResourcePolicy, Option='same-site')
For Starlette server
from starlette.applications import Starlette from Secweb.CrossOriginResourcePolicy import CrossOriginResourcePolicy
app = Starlette()
app.add_middleware(CrossOriginResourcePolicy, Option='same-site')
For more detail on Cross Origin Resource Policy header go to MDN Docs.
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.
For FastApi server
from fastapi import FastAPI from Secweb.ClearSiteData import ClearSiteData
app = FastAPI()
app.add_middleware(ClearSiteData, Option={'cookies': True}, Routes=['/login', '/logout/{id}'])
For Starlette server
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 MDN Docs.
Cache Control
CacheControl class sets the Cache-Control header. This is useful for controlling cached data on user`s browser
For FastApi server
from fastapi import FastAPI from Secweb.CacheControl import CacheControl
app = FastAPI()
app.add_middleware(CacheControl, Option={'s-maxage': 600, 'public': True})
For Starlette server
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 MDN Docs.
Contributing
Pull requests and Issues are welcome. For major changes, please open an issue first to discuss what you would like to change.
License
Secweb Icon
Secweb Icon © 2021 - 2025 by Motagamwala Taha Arif Ali is licensed under Attribution-NonCommercial-NoDerivatives 4.0 International