Include gmid.h as first header in every file, as it then includes config.h (that defines _GNU_SOURCE for instance). Fix also a warning about unsigned vs signed const char pointers in openssl.

again, to be RFC3986 compliant.

this parse gemini://example.com///foo into an IRI whose path is "foo". I'm not 100% this is standard-compliant but: 1. it seems a logical consequence of the URI/IRI cleaning algo (where we drop sequential slashes) 2. practically speaking serving file a sequence of forward slashes doesn't really make sense, even in the case of CGI scripts

RFC3986 3.2.2 "Host" says that > Although host is case-insensitive, producers and normalizers should > use lowercase for registered names and hexadecimal addresses for the > sake of uniformity, while only using uppercase letters for > percent-encodings. so we cope with that.

RFC3986 in section 3.1 "Scheme" says that > Although schemes are case-insensitive, the canonical form is > lowercase and documents that specify schemes must do so with > lowercase letters. An implementation should accept uppercase > letters as equivalent to lowercase in scheme names (e.g., allow > "HTTP" as well as "http") for the sake of robustness but should only > produce lowercase scheme names for consistency. so we cope with that. The other possibility would have been to use strcasecmp instead of strcmp when checking on the protocol, but since the "case" version, although popular, is not part of any standard AFAIK I prefer downcasing while parsing and be done with it.