Commit graph

78 commits

Author SHA1 Message Date
sin
29c8cfa201 Rename fd to listenfd for readability
Avoid confusion in functions that use 'fd' and shadow the
global fd.
2014-08-22 11:55:36 +02:00
sin
de74d9b8fe Set up process limits and socket timeouts
(Until we have non-blocking sockets + poll())
2014-08-22 11:55:33 +02:00
sin
4f18d89f22 No need to do a socket release here
1s is too hardcore and impacts performance.
2014-08-22 11:55:26 +02:00
sin
293eb4489d Fix off-by-one 2014-08-22 11:55:22 +02:00
FRIGN
5dac8de322 Allow dir-listing to be a configurable option 2014-08-20 20:47:29 +02:00
FRIGN
ca2c107f30 Remove whitespace from manual 2014-08-20 20:44:13 +02:00
Hiltjo Posthuma
c00949d37d quark.1: add manpage
quark.c: alphabeticly sort options, like in the manpage.
Makefile: add manpage rule to Makefile and fix make dist.
2014-08-20 20:42:58 +02:00
Hiltjo Posthuma
43c4400a77 update README 2014-08-20 20:42:54 +02:00
Hiltjo Posthuma
9fd46fd50e read header until \r\n\r\n or \n\n 2014-08-20 20:42:50 +02:00
Hiltjo Posthuma
19fbedc39a add option -l to enable dirlisting, now disabled by default...
... alphasort direntries using scandir().
2014-08-20 20:42:46 +02:00
Hiltjo Posthuma
fa113f8b47 cgi: parse Status: header
CGI applications can specify a HTTP status to output with the Status:
header. For simplicity the CGI application must use this header on the
first line. With this change cloning git repositories over HTTP with
cgit works.

in config.mk specify _GNU_SOURCE and _POSIX_C_SOURCE instead of
_GNU_SOURCE, this is for getline().
2014-08-20 12:58:10 +02:00
FRIGN
8b6bdd39ff Remove "@strip $@" from the Makefile
LDFLAGS -s already strips.
Thanks, Hiltjo!
2014-08-16 22:05:43 +02:00
sin
7ecf520b30 Fix potentially uninitialized vars 2014-08-16 12:09:00 +02:00
sin
df8437d4f6 Do not indent switch cases
There's only one way to format switch statements.

http://cm.bell-labs.com/cm/cs/who/dmr/ctut.pdf - page 16
2014-08-15 19:51:44 +02:00
Hiltjo Posthuma
2822488312 improve CGI support
- set some more environment variables (PATH_INFO for example is used by
  cgit). Also set REMOTE_ADDR, SERVER_PORT, SERVER_SOFTWARE.
- when a file is requested in cgi mode serve it, if it doesn't exist,
  pass it to the CGI script (needed for cgit image/CSS).
2014-08-14 17:57:03 +02:00
Hiltjo Posthuma
159cdb3e0b small style and CGI message fix 2014-08-14 17:51:32 +02:00
FRIGN
bd9d7e3493 Fortify the sanity-checks
Hiltjo made a good start, but we need to check both the pointers
and the first value to make sure that a NULL-pointer is not
passed to the functions.
2014-08-14 17:48:37 +02:00
Hiltjo Posthuma
8aa3e3f48f config: allow to set options as application arguments 2014-08-14 17:43:46 +02:00
FRIGN
3962978bdd Increase clarity of the len-check 2014-08-14 14:18:40 +02:00
FRIGN
67750f916f check for len(reqbuf) = 0
Probably never the case, but we want to cleanly catch this error
instead of bringing up a segfault with reqbuf[-1].
2014-08-14 13:58:36 +02:00
FRIGN
72d02aa5b1 Ignore EPIPE while writing file to socket
If the client decides not to listen, it's not that much of a problem.
Don't flood the logs with "Broken pipe"-messages by silently letting
this "error" pass.
2014-08-14 13:14:08 +02:00
sin
8fdfa36914 Ignore SIGPIPE
If there's no reading end (client closed connection) and quark
tries to write to the socket, it will get a SIGPIPE.  Just ignore it.
2014-08-14 09:57:03 +02:00
sin
5d20e3dc27 No need for MAXBUFLEN+1
Return -1 if writedata() fails.
2014-08-14 09:56:23 +02:00
sin
21ec61991f Ensure mod is properly initialized
Fixes a segfault.
2014-08-14 09:54:37 +02:00
FRIGN
a1fa707eec Fix streaming errors
Streaming a file (through mplayer for instance), the socket would
block, because mplayer fills its buffer sequentially.
We would've never gotten to a write(.., n) == n.

Instead, do it like we read from files and accept the fact clients
can accept data chunk-wise, too.

The reason why this error went unnoticed is that I added a faulty
printf-directive (%ls for ssize_t), which silently produced
no output.
Thanks to sin for fixing the %ls -> %zd error, as it made me look
at the code again.
2014-08-14 09:47:23 +02:00
FRIGN
a0a2b864a6 Don't let r be uninitialized
Restore the functionality before the do-while-loop was removed.
2014-08-13 21:05:53 +02:00
FRIGN
411705dfc0 set host[0] = 0 at the beginning for more safety 2014-08-13 19:37:36 +02:00
FRIGN
8001703f50 Fortify error-cases
We don't want to play with our luck here.
2014-08-12 19:17:19 +02:00
FRIGN
390b5855f5 Streamline the code 2014-08-12 10:34:06 +02:00
FRIGN
ef51cd3355 HTTP 401 -> 403
When the client requests a hidden file, we forbid access.
401 is mostly used when a login is required and hasn't been provided.
Thus, given we don't offer a login-prompt to access hidden and bogus
files but categorically reject them, 403 makes more sense here.
2014-08-11 16:59:27 +02:00
FRIGN
9e2662c5e9 Get rid of getnameinfo and use inet_ntop instead
Compiling quark against musl slowed down request-times considerably.
After further analysis, I found out that the library does a DNS-
request on each address passed to getnameinfo.
Given we chroot into a folder, the /etc/resolv.conf was missing,
which led to the really long response-times (~3-5s).
After hardlinking the /etc/resolv.conf inside the chroot, the
times dropped to ~200ms, as now the library knew which NS to
contact directly.

This obviously isn't fast enough.

Thanks to Hiltjo's useful tips I rewrote the section using
inet_ntop (POSIX 2001).
Now the response-times are back to 1-2ms and we don't need
to copy /etc/resolv.conf everywhere we go.

FYI: This is not a bug in musl, but rather different behaviour.
2014-08-11 16:16:37 +02:00
FRIGN
55912e14bf Change tstamp() to allow passing time_t
then use this to remove duplicate code in the last-modified-section.
2014-08-11 15:37:45 +02:00
FRIGN
54a95cd229 Rectify error-handling 2014-08-11 15:23:48 +02:00
FRIGN
00e2aa8da6 Change HTTP-status-codes to defines
Doesn't change binary-size, but allows using them inside the
error-page-generation-routines.
2014-08-11 13:48:37 +02:00
FRIGN
d5af6424f1 Reordering function-prototypes and functions and size_t-correctness 2014-08-11 13:29:29 +02:00
FRIGN
b00fc1454f Add strftime to modified-date-check 2014-08-11 13:12:53 +02:00
FRIGN
5c7155255c Use gmtime() instead of localtime()
%Z is a GNU extension, so we avoid it here by these means.

Thanks Hiltjo!
2014-08-09 22:33:11 +02:00
FRIGN
34b584e2cb Fix mime-handling with default mime
Now it should work. It doesn't make much sense to tweak the default
mime-type, given octet-stream is the default and there are
no real alternatives which would make sense.

Thanks Hiltjo and sin!
2014-08-09 22:29:08 +02:00
FRIGN
dc82dd9705 Fix mime-check
For "" to actually go through, strcmp should only check for the length
of the extension string.
2014-08-09 21:42:31 +02:00
FRIGN
93f27cd081 Change default mimetype to application/octet-stream
and move it to config.def.h instead of hiding it in the code.
2014-08-09 21:14:40 +02:00
FRIGN
bd544952fd Switch to strftime 2014-08-09 21:03:55 +02:00
FRIGN
f142064a17 Simplify logging
For a server, a solid logging-facility is very important.
Reading quark's logs isn't very pleasant, given it prints out
more vocabulary than necessary.
This patch fixes this problem by bringing the logs into a
readable and even parsable form:

-timestamp-   -keyword-  [-message-]

Keywords now take the role as carriers of information.
Instead of writing that we're redirecting, we just
print a line with a status 304 and what the requested
location was. The subsequent 200-response shows the
redirected location.
This also makes clearer what happens in the background.

The tab-separation allows easy parsing.
2014-08-09 18:32:48 +02:00
FRIGN
10416a352b Coding style 2014-08-08 16:46:01 +02:00
FRIGN
f915f82a40 Refactor responsefile()
Add some comments and improve coding-style.
2014-08-08 15:37:27 +02:00
FRIGN
68535cc04f Use ssize_t for read- and write-return-values 2014-08-08 14:23:12 +02:00
FRIGN
a345c63a59 Refactor sighandler
You can't handle SIGKILL. Given we have control over which
signals are passed to the sighandler, it's enough to catch SIGCHLD
and do standard behaviour than building a big switch for that.
2014-08-07 17:24:39 +02:00
FRIGN
92b8bc27da Refactor loop inside writedata()
Use for for this stuff.
2014-08-07 17:02:03 +02:00
FRIGN
76834092d7 Unify return values
This is the first step for unifying the return-values inside quark.

 1: error
 0: success
-1: not found (non-fatal, for instance, if you run getresentry
               on a non-essential entry)
2014-08-07 16:56:28 +02:00
FRIGN
5ffad8984a Use named indices for the response-entry-array
It was actually sitting right in front of my eyes in the
sighandler-funtion.
This will help sort out ambiguities or mixing up array-indices.
2014-08-07 16:34:46 +02:00
FRIGN
1e23378afd Use strsignal() for signal-logging
This also makes clearer what happens when you do not know the
abbreviations well.
2014-08-07 16:28:01 +02:00