Gemini from http

proxy.py is a Gemini server that proxies all content to an http or https server.

proxy.py loads certificates following the structure of Apache mod_md.

Providing the certificates via systemd credentials

With /etc/systemd/system/gemini-from-http.service:

[Service]
LoadCredential=certificates:/etc/apache2/md/domains/
ExecStart=.../proxy.py --certificates-from-credential certificates
DynamicUser=true
CapabilityBoundingSet=
PrivateDevices=true
ProtectClock=true
ProtectKernelLogs=true
ProtectControlGroups=true
ProtectKernelModules=true
SystemCallArchitectures=native
MemoryDenyWriteExecute=true
RestrictNamespaces=true
ProtectHostname=true
LockPersonality=true
ProtectKernelTunables=true
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
RestrictRealtime=true
# If you don't put proxy.py in a home directory... ProtectHome=true
ProtectProc=invisible
ProcSubset=pid
PrivateUsers=self
SystemCallFilter=@system-service
SystemCallErrorNumber=EPERM
UMask=7777

Systemd injects the certificates to a private path than only proxy.py can read. The injection is a one off, so you must restart the service to get updated certificates.

Providing the certificates manually

To run proxy.py as a regular user, you can run the package-mod-md-certs script as root to copy the certificates to your user:

su -c ./package-mod-md-certs | tar x

Then you can run:

./proxy.py --certificates-from-path domains/