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otherwise the feature-test-macros won't kick in as they should.
should fix #329
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introduced in 0ad8904b40d699405f60655606db42475c011b67
closes #327
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other characters in the [[:space:]] set can't possibly be encountered,
and this speeds up parsing by approximately 10%.
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this allows easier time measurements for benchmarks.
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there's no reason to display this as warning.
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the INT regex macro supported a 0x prefix (used e.g. for port numbers),
however following that, only digits were accepted, and not the full
range of hexdigits. it's unlikely this was used, so remove it.
note that the () expression is kept, so we don't have to adjust match
number indices all over the place.
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otherwise it will be missing in `make dist`-generated tarballs.
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this allows to use tag names with a custom suffix too.
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git describe prefixes the sha1 commit hash with -g, which is exactly what
we're after. this change gets rid of the confusing "g" in the commit hash
and allows tag names that include "-".
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it's been reported[0] that RHEL7 fails to properly set the length
parameter of the getsockname() call to the length of the required
struct sockaddr type, and always returns the length passed if it
is big enough.
the SOCKADDR_UNION_* macros originate from my microsocks[1] project,
and facilitate handling of the sockaddr mess without nasty casts.
[0]: https://github.com/tinyproxy/tinyproxy/issues/45#issuecomment-694594990
[1]: https://github.com/rofl0r/microsocks
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it turned out that close()ing an fd behind the back of a thread
doesn't actually cause blocking operations to get a read/write event,
because the fd will stay valid to in-progress operations.
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even though the existing IPV6 regex caught (almost?) all invalid
ipv6 addresses, it did so with a huge performance penalty.
parsing a file with 32K allow or deny statement took 30 secs in
a test setup, after this change less than 3.
the new regex is sufficient to recognize all valid ipv6 addresses,
and hands down the responsibility to detect corner cases to the
system's inet_pton() function, which is e.g. called from insert_acl(),
which now causes a warning to be printed in the log if a seemingly
valid address is in fact invalid.
the new regex has been tested with 486 testcases from
http://download.dartware.com/thirdparty/test-ipv6-regex.pl
and accepts all valid ones and rejects most of the invalid ones.
note that the IPV4 regex already did a similar thing and checked only
whether the ip looks like [0-9]+.[0-9]+.[0-9]+.[0-9]+ without pedantry.
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move it to before disabling logging, so a message with the correct
timestamp is printed if logging was already enabled.
also add a message when loading finished, so one can see from the
timestamp how long it took.
note that this only works on a real config reload triggered by
SIGHUP/SIGUSR1, because on startup we don't know yet where to log to.
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note that the old code inserted added headers at the beginning of the
list, reasoning unknown. this seems counter-intuitive as the headers
would end up in the request in the reverse order they were added,
but this was irrelevant, as the headers were originally first put
into the hashmap hashofheaders before sending it to the client.
since the hashmap didn't preserve ordering, the headers would appear
in random order anyway.
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usage of select() is inefficient (because a huge fd_set array has to
be initialized on each call) and insecure (because an fd >= FD_SETSIZE
will cause out-of-bounds accesses using the FD_*SET macros, and a system
can be set up to allow more than that number of fds using ulimit).
for the moment we prepared a poll-like wrapper that still runs select()
to test for regressions, and so we have fallback code for systems without
poll().
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this allows to access the conn member from the main thread handling
the childs, plus simplifies the code.
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also fixes a bug where the ErrorFile directive would create a
new hashmap on every added item, effectively allowing only
the use of the last specified errornumber, and producing memory
leaks on each config reload.
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due to the usage of a hashmap to store headers, when relaying them
to the other side the order was not prevented.
even though correct from a standards point-of-view, this caused
issues with various programs, and it allows to fingerprint the use
of tinyproxy.
to implement this, i imported the MIT-licensed hsearch.[ch] from
https://github.com/rofl0r/htab which was originally taken from
musl libc. it's a simple and efficient hashtable implementation
with far better performance characteristic than the one previously
used by tinyproxy. additionally it has an API much more well-suited
for this purpose.
orderedmap.[ch] was implemented from scratch to address this issue.
behind the scenes it uses an sblist to store string values, and a htab
to store keys and the indices into the sblist.
this allows us to iterate linearly over the sblist and then find the
corresponding key in the hash table, so the headers can be reproduced
in the order they were received.
closes #73
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- we need to free the config after it has been succesfully loaded,
not unconditionally before reloading.
- we also need to free them before exiting from the main program
to have clean valgrind output.
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This reverts commit 6dd3806f7d1a337fb89e335e986e1fa4eab8340c.
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this would leak only once on program termination, so it's no big
deal apart from having spurious reachable memory in valgrind logs.
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the appropriate code in the signal handler was already set up,
but for some reason the signal itself not being handled.
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