Mercurial > libervia-web
annotate libervia/web/server/proxy.py @ 1536:dc81403a5b2f
browser: chat page:
since the move to Brython, the chat was really basic and not really usable. Now that
dynamism has been re-implemented correctly in the new frontend, a real advanced chat page
can be done. This is the first draft in this direction.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 28 Jun 2023 10:05:13 +0200 |
| parents | eb00d593801d |
| children |
| rev | line source |
|---|---|
| 1360 | 1 #!/usr/bin/env python3 |
| 2 | |
| 3 # Libervia: a Salut à Toi frontend | |
| 1396 | 4 # Copyright (C) 2011-2021 Jérôme Poisson <goffi@goffi.org> |
| 1360 | 5 |
| 6 # This program is free software: you can redistribute it and/or modify | |
| 7 # it under the terms of the GNU Affero General Public License as published by | |
| 8 # the Free Software Foundation, either version 3 of the License, or | |
| 9 # (at your option) any later version. | |
| 10 | |
| 11 # This program is distributed in the hope that it will be useful, | |
| 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 # GNU Affero General Public License for more details. | |
| 15 | |
| 16 # You should have received a copy of the GNU Affero General Public License | |
| 17 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 from twisted.web import proxy | |
| 19 from twisted.python.compat import urlquote | |
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server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
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20 from twisted.internet import address |
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21 from libervia.backend.core.log import getLogger |
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22 from libervia.web.server.constants import Const as C |
| 1360 | 23 |
| 24 log = getLogger(__name__) | |
| 25 | |
| 26 | |
| 27 | |
| 28 class SatProxyClient(proxy.ProxyClient): | |
| 29 | |
| 30 def handleHeader(self, key, value): | |
| 31 if key.lower() == b"x-frame-options": | |
| 32 value = b"sameorigin" | |
| 33 elif key.lower() == b"content-security-policy": | |
| 34 value = value.replace(b"frame-ancestors 'none'", b"frame-ancestors 'self'") | |
| 35 | |
| 36 super().handleHeader(key, value) | |
| 37 | |
| 38 | |
| 39 class SatProxyClientFactory(proxy.ProxyClientFactory): | |
| 40 protocol = SatProxyClient | |
| 41 | |
| 42 | |
| 43 class SatReverseProxyResource(proxy.ReverseProxyResource): | |
| 44 """Resource Proxy rewritting headers to allow embedding in iframe on same domain""" | |
| 45 proxyClientFactoryClass = SatProxyClientFactory | |
| 46 | |
| 47 def getChild(self, path, request): | |
| 48 return SatReverseProxyResource( | |
| 49 self.host, self.port, | |
| 50 self.path + b'/' + urlquote(path, safe=b"").encode('utf-8'), | |
| 51 self.reactor | |
| 52 ) | |
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parents:
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53 |
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54 def render(self, request): |
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55 # Forwarded and X-Forwarded-xxx headers can be set |
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56 # if we have behind an other proxy |
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57 if ((not request.getHeader(C.H_FORWARDED) |
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58 and not request.getHeader(C.H_X_FORWARDED_HOST))): |
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parents:
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59 forwarded_data = [] |
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parents:
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60 addr = request.getClientAddress() |
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parents:
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61 if ((isinstance(addr, address.IPv4Address) |
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parents:
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62 or isinstance(addr, address.IPv6Address))): |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
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63 request.requestHeaders.setRawHeaders(C.H_X_FORWARDED_FOR, [addr.host]) |
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Goffi <goffi@goffi.org>
parents:
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64 forwarded_data.append(f"for={addr.host}") |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
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65 host = request.getHeader("host") |
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parents:
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66 if host is None: |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
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67 port = request.getHost().port |
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Goffi <goffi@goffi.org>
parents:
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68 hostname = request.getRequestHostname() |
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396d5606477f
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parents:
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69 host = hostname if port in (80, 443) else f"{hostname}:{port}" |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
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70 request.requestHeaders.setRawHeaders(C.H_X_FORWARDED_HOST, [host]) |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
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changeset
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71 forwarded_data.append(f"host={host}") |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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72 proto = "https" if request.isSecure() else "http" |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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73 request.requestHeaders.setRawHeaders(C.H_X_FORWARDED_PROTO, [proto]) |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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74 forwarded_data.append(f"proto={proto}") |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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75 request.requestHeaders.setRawHeaders( |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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76 C.H_FORWARDED, [";".join(forwarded_data)] |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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77 ) |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
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78 |
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396d5606477f
server (proxy): add "Forwarded" and "X-Forwarded-xxx" headers to reverse proxy
Goffi <goffi@goffi.org>
parents:
1396
diff
changeset
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79 return super().render(request) |