gem

gemini server with TLS and script for generating working TLS certs

Supports

• mime types
• directory listing
• chunked file transfer
• passes most gemini-diagnostics tests

build

To build you may need to install libssl-dev

$ sudo apt install libssl-dev
$ make ssl
$ make

Program options

-h [HOSTNAME]   ex: -h "example.com"   (localhost default)
-p [PORT]       ex: -p 1965            (default)
-d [DOC ROOT]   ex: -d "/var/gemini"
-i [INDEX FILE] ex: -i "index.gmi"     (default)
-e  enumerate directories without an index file
-a  permit requests with a different hostname

Run with ./gem -d capsule -e

To use your own domain name you have to replace /CN=localhost in the ssl make target to your domain: eg example.com => /CN=example.com.

Then you must also specify the domain as the hostname when running the program:

./gem -h "example.com" -d capsule -e

The -a flag can be useful for accessing the server over IP (perhaps over LAN) without a DNS name.

Note: -d must always be specified

misc

Tip: don't try to serve files with symbols like a space " ", #, & etc. It doesn't work with most browsers.

Building on Raspberry Pi? remove the -fcf-protection CFLAG

Great development tool:

https://github.com/michael-lazar/gemini-diagnostics

Test gemini client:

echo "gemini://localhost" | openssl s_client -quiet -crlf -connect localhost:1965