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Try all the addresses specified with Bind in order. This is necessary
e.g. for maintaining IPv4+6 connectivity while still being restricted to
one interface.
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otherwise the feature-test-macros won't kick in as they should.
should fix #329
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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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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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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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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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- 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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another fallout of the config refactoring finished by
2e02dce0c3de4a231f74b44c34647406de507768.
apparently no one using the ErrorFile directive used git master
during the last months, as there have been no reports about this issue.
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this allows to see them when the verbose INFO loglevel is not desired.
closes #78
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let's use POSIX LINE_MAX (usually 4KB) instead of 1KB.
closes #226
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unlike other functions called from the config parser code,
anonymous_insert() accesses the global config variable rather than
passing it as an argument. however the global variable is only set
after successful loading of the entire config.
we fix this by adding a conf argument to each anonymous_* function,
passing the global pointer in calls done from outside the config
parser.
fixes #292
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previously, default values were stored once into a static struct,
then on each reload item by item copied manually into a "new"
config struct.
this has proven to be errorprone, as additions in one of the 2
locations were not propagated to the second one, apart from
being simply a lot of gratuitous code.
we now simply load the default values directly into the config
struct to be used on each reload.
closes #283
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since this is set via command line, we can deal with it easily
from where it is actually needed.
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since this option can't be set via config file, it makes sense
to factor it out and use it only where strictly needed, e.g. in
startup code.
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if we don't handle these gracefully, pretty much every existing config
file will fail with an error, which is probably not very friendly.
the obsoleted config items can be made hard errors after the next
release.
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the existing codebase used an elaborate and complex approach for
its parallelism:
5 different config file options, namely
- MaxClients
- MinSpareServers
- MaxSpareServers
- StartServers
- MaxRequestsPerChild
were used to steer how (and how many) parallel processes tinyproxy
would spin up at start, how many processes at each point needed to
be idle, etc.
it seems all preforked processes would listen on the server port
and compete with each other about who would get assigned the new
incoming connections.
since some data needs to be shared across those processes, a half-
baked "shared memory" implementation was provided for this purpose.
that implementation used to use files in the filesystem, and since
it had a big FIXME comment, the author was well aware of how hackish
that approach was.
this entire complexity is now removed. the main thread enters
a loop which polls on the listening fds, then spins up a new
thread per connection, until the maximum number of connections
(MaxClients) is hit. this is the only of the 5 config options
left after this cleanup. since threads share the same address space,
the code necessary for shared memory access has been removed.
this means that the other 4 mentioned config option will now
produce a parse error, when encountered.
currently each thread uses a hardcoded default of 256KB per thread
for the thread stack size, which is quite lavish and should be
sufficient for even the worst C libraries, but people may want
to tweak this value to the bare minimum, thus we may provide a new
config option for this purpose in the future.
i suspect that on heavily optimized C libraries such a musl, a
stack size of 8-16 KB per thread could be sufficient.
since the existing list implementation in vector.c did not provide
a way to remove a single item from an existing list, i added my
own list implementation from my libulz library which offers this
functionality, rather than trying to add an ad-hoc, and perhaps
buggy implementation to the vector_t list code. the sblist
code is contained in an 80 line C file and as simple as it can get,
while offering good performance and is proven bugfree due to years
of use in other projects.
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previously was restricted to alphanumeric chars only.
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closes #15 for real.
the previous patch that was merged[0] was halfbaked and only removed
the warning part of the original patch from openwrt[1], but didn't
actually activate bind support. further it invoked UB by removing
the return value from the function, if transparent proxy support was
compiled in.
[0]: d97d486d53ce214ae952378308292f333b8c7a36
[1]: https://gitlab.labs.nic.cz/turris/openwrt-packages/commit/7c01da4a72e6f0b7613a86529547659ea4007eba
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closes #50
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and add a NONE member.
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loosely based on @valenbg1's code from PR #38
closes #38
closes #96
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- syslog.h is a standard posix header, this #ifdef is an artifact
accidentally left in.
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using the "BasicAuth" keyword in tinyproxy.conf.
base64 code was written by myself and taken from my own library "libulz".
for this purpose it is relicensed under the usual terms of the tinyproxy
license.
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original patch submitted in 2006 to debian mailing list:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=392848%29#12
this version was rebased to git and updated by Russ Dill <russ.dill@gmail.com>
in 2015 (the original patch used a different config file format).
as discussed in #40.
commit message by @rofl0r.
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Found by coverity.
Signed-off-by: Michael Adam <obnox@samba.org>
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This introduces a list (vector) of addresses instead of
having just one address string.
Signed-off-by: Michael Adam <obnox@samba.org>
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This was asked in bug #90 comment #8.
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Patch by Jordi Mallach.
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This is a modification of a patch originally written by
John van der Kamp <john@kirika.demon.nl> at
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=579427#12>
The modification was done by the committer.
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This replaces a do { ... } while (0) with break statements
ba gotos. Imho, this is much clearer.
Michael
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