| Commit message (Collapse) | Author | Age |
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That is, GETINFO limits/max-mem-in-queues
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If we can't detect the physical memory, the new default is 8 GB on
64-bit architectures, and 1 GB on 32-bit architectures.
If we *can* detect the physical memory, the new default is
CLAMP(256 MB, phys_mem * 0.75, MAX_DFLT)
where MAX_DFLT is 8 GB on 64-bit architectures and 2 GB on 32-bit
architectures.
You can still override the default by hand. The logic here is simply
trying to choose a lower default value on systems with less than 12 GB
of physical RAM.
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According to reports, most programs degrade somewhat gracefully on
getting no answer for an MX or a CERT for www.example.com, but many
flip out completely on a NOTIMPL error.
Also, treat a QTYPE_ALL query as just asking for an A record.
The real fix here is to implement proposal 219 or something like it.
Fixes bug 10268; bugfix on 0.2.0.1-alpha.
Based on a patch from "epoch".
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This change prevents LD_BUG warnings and bootstrap failure messages
when we try to do directory fetches when starting with
DisableNetwork == 1, a consensus present, but no descriptors (or
insufficient descriptors) yet.
Fixes bug 11200 and bug 10405. It's a bugfix on 0.2.3.9-alpha.
Thanks to mcs for walking me through the repro instructions!
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Make it clear that a SIGHUP is not the only action that can cause a
config re-read.
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Since we need to toggle that element in non-SIGHUP situations too where
the config was re-read (like in SETCONF or RESETCONF).
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Instead, figure out if we should restart PT proxies _immediately_ after
we re-read the config file.
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Conflicts:
src/or/entrynodes.c
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My first implementation was broken, since it returned "whether there
is one bridge" rather than "how many bridges."
Also, the implementation for the n_options_out feature in
choose_random_entry_impl was completely broken due to a missing *.
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This is meant to be a better bug 9229 fix -- or at least, one more
in tune with the intent of the original code, which calls
router_retry_directory_downloads() only on the first bridge descriptor.
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This is a fix for 9963. I say this is a feature, but if it's a
bugfix, it's a bugfix on 0.2.4.18-rc.
Old behavior:
Mar 27 11:02:19.000 [notice] Bootstrapped 50%: Loading relay descriptors.
Mar 27 11:02:20.000 [notice] Bootstrapped 51%: Loading relay descriptors.
Mar 27 11:02:20.000 [notice] Bootstrapped 52%: Loading relay descriptors.
... [Many lines omitted] ...
Mar 27 11:02:29.000 [notice] Bootstrapped 78%: Loading relay descriptors.
Mar 27 11:02:33.000 [notice] We now have enough directory information to build circuits.
New behavior:
Mar 27 11:16:17.000 [notice] Bootstrapped 50%: Loading relay descriptors
Mar 27 11:16:19.000 [notice] Bootstrapped 55%: Loading relay descriptors
Mar 27 11:16:21.000 [notice] Bootstrapped 60%: Loading relay descriptors
Mar 27 11:16:21.000 [notice] Bootstrapped 65%: Loading relay descriptors
Mar 27 11:16:21.000 [notice] Bootstrapped 70%: Loading relay descriptors
Mar 27 11:16:21.000 [notice] Bootstrapped 75%: Loading relay descriptors
Mar 27 11:16:21.000 [notice] We now have enough directory information to build circuits.
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Previously we said "Sandbox is not implemented on this platform" on
Linux boxes without libseccomp. Now we say that you need to build
Tor built with libseccomp. Fixes bug 11543; bugfix on 0.2.5.1-alpha.
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The server cipher list is (thanks to #11513) chosen systematically to
put the best choices for Tor first. The client cipher list is chosen
to resemble a browser. So let's set SSL_OP_CIPHER_SERVER_PREFERENCE
to have the servers pick according to their own preference order.
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Fix on fb595922; bug not in any released Tor. Found with
--enable-expensive-hardening.
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OpenSSL needs this, or RAND_poll() will kill the process.
Also, refuse with EACCESS, not errno==-1 (!).
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Older versions of Libevent are happy to open SOCK_DGRAM sockets
non-cloexec and non-nonblocking, and then set those flags
afterwards. It's nice to be able to allow a flag to be on or off in
the sandbox without having to enumerate all its values.
Also, permit PF_INET6 sockets. (D'oh!)
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Libevent uses an arc4random implementation (I know, I know) to
generate DNS transaction IDs and capitalization. But it liked to
initialize it either with opening /dev/urandom (which won't work
under the sandbox if it doesn't use the right pointer), or with
sysctl({CTL_KERN,KERN_RANDOM,RANDOM_UUIC}). To make _that_ work, we
were permitting sysctl unconditionally. That's not such a great
idea.
Instead, we try to initialize the libevent PRNG _before_ installing
the sandbox, and make sysctl always fail with EPERM under the
sandbox.
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(It's nice to know what we were about to rename before we died from
renaming it.)
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The compiler doesn't warn about this code:
rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(openat), 1,
SCMP_CMP(0, SCMP_CMP_EQ, AT_FDCWD),
SCMP_CMP(1, SCMP_CMP_EQ, param->value),
SCMP_CMP(2, SCMP_CMP_EQ, O_RDONLY|...));
but note that the arg_cnt argument above is only 1. This means that
only the first filter (argument 0 == AT_FDCWD) is actually checked!
This patch also fixes the above error in the openat() filter.
Earlier I fixed corresponding errors in filters for rename() and
mprotect().
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(We were only checking the first parameter of each rename call.)
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Drop pindex,pindex2 as unused.
Admit a type to avoid using a void*
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Appearently, the majority of the filenames we pass to
sandbox_cfg_allow() functions are "freeable right after". So, consider
_all_ of them safe-to-steal, and add a tor_strdup() in the few cases
that aren't.
(Maybe buggy; revise when I can test.)
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(If we don't restrict rename, there's not much point in restricting
open, since an attacker could always use rename to make us open
whatever they want.)
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If we intern two copies of a string, later calls to
sandbox_intern_string will give the wrong one sometimes.
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Allow files that weren't in the list; Allow the _sysctl syscall;
allow accept4 with CLOEXEC and NONBLOCK.
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on an orconn
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setting DisableNetwork to 1
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