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We found this in #40076, after we started using buf_move_all() in
more places. Fixes bug #40076; bugfix on 0.3.3.1-alpha. As far as
I know, the crash only affects master, but I think this warrants a
backport, "just in case".
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The failing case is #if'd out for now, but will be fixed in the next
commit.
Testing for a fix for #40076.
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I am very glad to have written this script.
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or.h should really include only the minimum of stuff from or/*,
common/*, and lib/*.
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* ADD new /src/common/crypto_rand.[ch] module.
* ADD new /src/common/crypto_util.[ch] module (contains the memwipe()
function, since all crypto_* modules need this).
* FIXES part of #24658: https://bugs.torproject.org/24658
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The goal here is to replace our use of msec-based timestamps with
something less precise, but easier to calculate. We're doing this
because calculating lots of msec-based timestamps requires lots of
64/32 division operations, which can be inefficient on 32-bit
platforms.
We make sure that these stamps can be calculated using only the
coarse monotonic timer and 32-bit bitwise operations.
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No other code changes.
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By convention, a function that frobs a foo_t should be called
foo_frob, and it should have a foo_t * as its first argument. But
for many of the buf_t functions, the buf_t was the final argument,
which is silly.
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Our convention is that functions which manipulate a type T should be
named T_foo. But the buffer functions were super old, and followed
all kinds of conventions. Now they're uniform.
Here's the perl I used to do this:
\#!/usr/bin/perl -w -i -p
s/read_to_buf\(/buf_read_from_socket\(/;
s/flush_buf\(/buf_flush_to_socket\(/;
s/read_to_buf_tls\(/buf_read_from_tls\(/;
s/flush_buf_tls\(/buf_flush_to_tls\(/;
s/write_to_buf\(/buf_add\(/;
s/write_to_buf_compress\(/buf_add_compress\(/;
s/move_buf_to_buf\(/buf_move_to_buf\(/;
s/peek_from_buf\(/buf_peek\(/;
s/fetch_from_buf\(/buf_get_bytes\(/;
s/fetch_from_buf_line\(/buf_get_line\(/;
s/fetch_from_buf_line\(/buf_get_line\(/;
s/buf_remove_from_front\(/buf_drain\(/;
s/peek_buf_startswith\(/buf_peek_startswith\(/;
s/assert_buf_ok\(/buf_assert_ok\(/;
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Also, put ext_or function in new module; it had accidentally gotten
into proto_socks.c
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This lets us drop the testing-only function buf_get_first_chunk_data(),
and lets us implement proto_http and proto_socks without looking at
buf_t internals.
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This commit does not change the implementation of any function: it
only moves code and adds new includes as necessary. Part of #23149.
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This patch fixes the operator usage in src/test/*.c to use the symbolic
operators instead of the normal C comparison operators.
This patch was generated using:
./scripts/coccinelle/test-operator-cleanup src/test/*.[ch]
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These required some special-casing, since some of the assumption
about real compression algorithms don't actually hold for the
identity transform. Specifically, we had assumed:
- compression functions typically change the lengths of their
inputs.
- decompression functions can detect truncated inputs
- compression functions have detectable headers
None of those is true for the identity transformation.
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We shouldn't call it lzma, because we are imposing a limit on the
memory needed for decoding.
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This patch refactors the buffer compression tests to support multiple
comprssion backends.
See: https://bugs.torproject.org/22085
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See https://bugs.torproject.org/21663
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See https://bugs.torproject.org/21663
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This patch refactors our streaming compression code to allow us to
extend it with non-zlib/non-gzip based compression schemas.
See https://bugs.torproject.org/21663
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To allow us to use the API name `tor_compress` and `tor_uncompress` as
the main entry-point for all compression/uncompression and not just gzip
and zlib.
See https://bugs.torproject.org/21663
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Fixes bug 20894; bugfix on 0.2.0.16-alpha.
We already applied a workaround for this as 20834, so no need to
freak out (unless you didn't apply 20384 yet).
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Also, add tests for the function.
Closes 20081; bugfix on 0.2.0.16-alpha. This is a Guido Vranken
issue. Thanks, Guido!
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These functions were there so that we could abstract the differences
between evbuffer and buf_t. But with the bufferevent removal, this
no longer serves a purpose.
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This is a partial fix for 18902.
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This is a big-ish patch, but it's very straightforward. Under this
clang warning, we're not actually allowed to have a global variable
without a previous extern declaration for it. The cases where we
violated this rule fall into three roughly equal groups:
* Stuff that should have been static.
* Stuff that was global but where the extern was local to some
other C file.
* Stuff that was only global when built for the unit tests, that
needed a conditional extern in the headers.
The first two were IMO genuine problems; the last is a wart of how
we build tests.
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Thanks to Roger for spotting this!
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I was going to add a test for this, but I realized that it had no
users. So, removed.
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Also, add some sample tests to be examples.
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They have been off-by-default since 0.2.5 and nobody has complained. :)
Also remove the buf_shrink() function, which hasn't done anything
since we first stopped using contiguous memory to store buffers.
Closes ticket 14848.
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We add a compression level argument to tor_zlib_new, and use it to
determine how much memory to allocate for the zlib object. We use the
existing level by default, but shift to smaller levels for small
requests when we have been over 3/4 of our memory usage in the past
half-hour.
Closes ticket 11791.
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