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139 Commits

Author SHA1 Message Date
Omar Polo a87f662565 refactoring state management 
instead of having a flag to discern between two different behaviours
in S_SENDING, split that state into S_SENDING_FILE and S_SENDING_CGI
(this will also make it easier in the future to add other sending
states).  While there, also get rid of `goodbye' and make start_reply
advance the state machine by itself.
 2021-01-24 09:49:09 +00:00
Omar Polo e7a2a99b5a added index option 2021-01-24 09:14:01 +00:00
Omar Polo f890c8c54d use a helper to handle no-body replies 2021-01-22 13:58:54 +00:00
Omar Polo 36162ed86d rename goodbye -> close_conn 2021-01-22 13:45:27 +00:00
Omar Polo f77a8c867e add ends_with 2021-01-21 22:45:49 +00:00
Omar Polo b2a6b61371 rename mimes to mime ; pass config esplicitly to mime* functions 2021-01-21 15:01:37 +00:00
Omar Polo 33ac26a0e5 fix prototypes 2021-01-21 14:49:11 +00:00
Omar Polo 12042ad700 add a configure script and some compat 
tested on openbsd, alpine and void
 2021-01-21 11:57:46 +00:00
Omar Polo 0be51733ef improve logs 
now we log the full IRI requested (before was only the path) and the
response line (even for CGI).
 2021-01-20 18:54:44 +00:00
Omar Polo 2debfe2b1f drop useless field 
was probably added to distinguish between AF_INET and AF_INET6, to use
different functions for logging.  But it wasn't really used, and now
we use getnameinfo anyway.
 2021-01-19 18:49:36 +00:00
Omar Polo 6119e13e8a moving "default type" from global options to server options 2021-01-19 11:28:41 +00:00
Omar Polo 05c23a54ea add "lang" server option 2021-01-19 10:58:29 +00:00
Omar Polo a010b0ddc5 move mimes into the struct config 2021-01-18 18:48:37 +00:00
Omar Polo 982069a120 add "mime" and "default type" option for the configuration 2021-01-18 18:43:47 +00:00
Omar Polo 0fbe79b33c improve mime handling 
we still have an hardcoded list, but this implements the API needed to
modify the mappings.
 2021-01-18 18:18:57 +00:00
Omar Polo d3a08f4d17 reorganize: move bunch of functions to server.c 
cgi.c wasn't really needed; it better to group all the server related
functions together, cgi or not.  Now gmid.c contains only startup and
utility code.
 2021-01-17 23:23:58 +00:00
Omar Polo 881a9dd9c2 split into two processes: listener and executor 
this way, we can sandbox the listener with seccomp (todo) or capsicum
(already done) and still have CGI scripts.  When we want to exec, we
tell the executor what to do, the executor executes the scripts and
send the fd backt to the listener.
 2021-01-16 19:41:34 +00:00
Omar Polo 7edc455ab4 move cgi stuff to its own file 2021-01-15 19:08:28 +00:00
Omar Polo 5bc3c98ed4 add protocols to the config 2021-01-15 18:55:05 +00:00
Omar Polo f7b816dc39 style 2021-01-15 15:21:51 +00:00
Omar Polo dafb57b8af sandbox also on FreeBSD with capsicum 2021-01-15 14:03:45 +00:00
Omar Polo 1590277007 conf & vhosts 
* gmid.c (main): changed behaviour: daemon off by default
(main): changed -c in -C (cert option)
(main): changed -k in -K (key option, for consistency with -C)
(main): added -c to load a configuration
(main): certs, key and doc (-C -K and -d) doesn't have a default value anymore
(handle_handshake): add vhosts support
 2021-01-15 09:17:43 +00:00
Omar Polo 9862b637c2 track handshakes 
This alter the current state machine by adding S_HANDSHAKE as the
initial state.  There, we ensure we did the handshake and we check
SNI.  ATM we simply continue in S_OPEN, but later we can add virtual
host checks there, and skip to S_INITIALIZING with an error state if
the client is accessing a wrong host.
 2021-01-13 18:40:18 +00:00
Omar Polo 0d7a38c4ce avoid __dead and return at the end of main 2021-01-11 15:28:25 +00:00
Omar Polo 796c6e75d7 fix build on non-OpenBSD systems 
not every system has a __dead attribute for functions.  This fixes the
build on FreeBSD.
 2021-01-11 15:16:50 +00:00
Omar Polo 7b1d979032 reject non-gemini protocols with 53 2021-01-11 14:45:57 +00:00
Omar Polo 3c1cf9d07c s/uri/iri since we accept IRIs 2021-01-11 13:08:00 +00:00
Omar Polo 28778244d6 fix build 2021-01-11 12:53:46 +00:00
Omar Polo 33756bd235 accept both ipv4 and ipv6 2021-01-10 22:56:33 +00:00
Omar Polo 709d6e5ead log also the port of the client 2021-01-10 22:29:22 +00:00
Omar Polo 9b374f41ee macro reordering 
and while there replace SAFE_SETENV with an inline function.  LOG is
more difficult to transform into an inline function, given the string
concatenations it does.  The other LOG* and FATAL macros are fine as
they already are.
 2021-01-10 14:40:14 +00:00
Omar Polo ef04b55160 switch to Bjoern Hoehrmann UTF-8 decoder 
It's correct, while my hacked valid_multibyte_utf8 would allow things
that aren't technically UTF8.
 2021-01-09 20:32:23 +00:00
Omar Polo 6c6c7a0ed7
rename cgi_setpoll_on_* to cgi_poll_on_* 2020-12-28 18:01:06 +01:00
Omar Polo 3d9a1c73de
fixing prototype order 2020-12-28 09:57:58 +01:00
Omar Polo 4a28dd014a
ignore also SIGHUP 
SIGHUP is sent when the tty is detached and by default kills the
process.  When we run in the background we don't care anymore about
the tty, so it should be safe for us to ignore SIGHUP.  (frankly,
I expected daemon(3) to do stuff like this for us).
 2020-12-28 09:55:56 +01:00
Omar Polo 6d91731552
fmt 2020-12-27 13:27:15 +01:00
Omar Polo 33d32d1fd6
implement a valid RFC3986 (URI) parser 
Up until now I used a "poor man" approach: the uri parser is barely a
parser, it tries to extract the path from the request, with some minor
checking, and that's all.  This obviously is not RFC3986-compliant.

The new RFC3986 (URI) parser should be fully compliant.  It may accept
some invalid URI, but shouldn't reject or mis-parse valid URI.  (in
particular, the rule for the path is way more relaxed in this parser
than it is in the RFC text).

A difference with RFC3986 is that we don't even try to parse the
(optional) userinfo part of a URI: following the Gemini spec we treat
it as an error.

A further caveats is that %2F in the path part of the URI is
indistinguishable from a literal '/': this is NOT conforming, but due
to the scope and use of gmid, I don't see how treat a %2F sequence in
the path (reject the URI?).
 2020-12-25 13:13:12 +01:00
Omar Polo d5aba4c791
added missing copyright stuff 2020-12-24 16:49:55 +01:00
Omar Polo 488f059ac4
moving declarations to header file 2020-12-24 16:48:39 +01:00