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it's used only to parse the -p flag. While there add check_port_num
to check the range for the port.
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we need to delete the events associated with the backends, otherwise
the server process won't ever quit.
Here, we add a pending counter to every backend and shut down
immediately if they aren't handling any client; otherwise we try to
close them as soon as possible (i.e. when they close the connection to
the last connected client.)
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Macros can be defined at the top of the configuration file:
dir = "/var/gemini"
cert = "/etc/keys"
and re-used later, for example
server "foo" {
root "$dir/foo" # -> /var/gemini/foo
cert "$cert/foo.pem" # -> /etc/keys/foo.pem
}
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GMID_VERSION follows the CGI/FastCGI style, i.e. project_name/version.
Define GMID_STRING with a more "human" variant "project_name version",
and reuse that in the --help and --version codepath.
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The actual implementation is based off doas' parse.y. This gave us
various benefits, like cleaner code, \ to break long lines, better
handling of quotes etc...
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the logger process now can receive a file descriptor to write logs
to. At the moment the logic is simple, if it receives a file it logs
there, otherwise it logs to syslog. This will allow to log on custom
log files.
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pass the correct loc_off to the executor, so the various variables
that depends on the matched location (like DOCUMENT_ROOT) are computed
correctly.
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it's been since the switch to libevent that is no longer needed.
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Not production-ready yet, but it's a start.
This adds a third ``backend'' for gmid: until now there it served
local files or CGI scripts, now FastCGI applications too.
FastCGI is meant to be an improvement over CGI: instead of exec'ing a
script for every request, it allows to open a single connection to an
``application'' and send the requests/receive the responses over that
socket using a simple binary protocol.
At the moment gmid supports three different methods of opening a
fastcgi connection:
- local unix sockets, with: fastcgi "/path/to/sock"
- network sockets, with: fastcgi tcp "host" [port]
port defaults to 9000 and can be either a string or a number
- subprocess, with: fastcgi spawn "/path/to/program"
the fastcgi protocol is done over the executed program stdin
of these, the last is only for testing and may be removed in the
future.
P.S.: the fastcgi rule is per-location of course :)
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saves some bytes of memory and removes the limit on the maximum number
of vhosts and location blocks.
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the 1024 bytes limits is for the META only, not for the whole
response. That means that the maximum size for the header line is
1029!
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while there, add capsicum for the logger process
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use imsg to handle ALL kinds of IPC in gmid. This simplifies and shorten the
code, and makes everything more uniform too.
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this fixes a bug introduced with the prefork mechanics: every server
process shared the same socket, and this would cause a race condition
when multiple server processes asked for a script cgi being executed.
This gives each server process its own socket to talk to the executor,
so the race cannot happen.
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this is to let the regression suite compile
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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.
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Using BUFSIZ in sbuf is not OK. It's variable, and in various places
we assume that sbuf is 1024 (like handle_cgi_reply). We could patch
those, but we aren't sure BUFSIZ is >= 1024! Let's keep the hardcoded
number.
(found by debugging on arch on amd64, where BUFSIZ is bigger)
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Before we mmap(2) file for reading, and use a buffer to handle CGI
scripts. Turns out, for sequential access over the whole mmap isn't
better than our loop on read. This has also the additional advantage
that we can use handle_cgi (now handle_copy) for both files and CGI,
which is pretty cool.
This also fixes a nasty bug where we could hang a connection forever,
because we scheduled the wrong type of event (read on POLLOUT and
write on POLLIN, it's the other way around!)
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now it's symmetrical to listener_main().
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keep mark_nonblock in utils.c, as otherwise the build for the regress
suite will fail (mark_nonblock needs fatal which is in gmid.c, and
we can't link gmid.o with the regress suite...)
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By marking all those function as static, the compiler is free to do
more optimizations. In addition, those functions are not used outside
server.c
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Now that I got rid of the enum+switch, adding more state is easier.
Before, we used an hack to remember if we had read the CGI reply or
not (c->code = -1).
This introduces a new state, handle_cgi_reply that reads the CGI
script reply, logs it, and only then switches to handle_cgi.
handle_cgi itself is cleaner, now it only reads into c->sbuf and send
what it had red.
We even get, almost for free, the 42 error. If read exists with -1 or
0 from in handle_cgi_reply, we return a proper error to the client.
We can extend this further in the future and also try to validate the
CGI reply (for now we're only looking for a \n).
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