Right-shifting negative values has implementation-defined behavior.
On all the platforms we work on right now, the behavior is to
sign-extend the input. That isn't what we wanted in
auth_type_val = (descriptor_cookie_tmp[16] >> 4) + 1;
Fix for 6861; bugfix on 0.2.1.5-alpha; reported pseudonymously.
The broken behavior didn't actually hurt anything, I think, since the
only way to get sign-extension to happen would be to have the top bit
of descriptor_cookie_tmp[16] set, which would make the value of
descriptor_cookie_tmp[16] >> 4 somewhere between 0b11111111 and
0b11111000 (that is, between -1 and -8). So auth_type_val would be
between -7 and 0. And the immediate next line does:
if (auth_type_val < 1 || auth_type_val > 2) {
So the incorrectly computed auth_type_val would be rejected as
invalid, just as a correctly computed auth_type_val would be.
Still, this stuff shouldn't sit around the codebase.
We were doing (1<<p) to generate a flag at position p, but we should
have been doing (U64_LITERAL(1)<<p).
Fixes bug 6861; bugfix on 0.2.0.3-alpha; reported pseudonymously.
add read_file_to_str_until_eof which is used by read_file_to_str
if the file happens to be a FIFO.
change file_status() to return FN_FILE if st_mode matches S_IFIFO
(on not-windows) so that init_key_from_file() will read from a FIFO.
We already had code on windows to fix our file sizes when we're
reading a file in text mode and its size doesn't match the size from
fstat. But that code was only enabled when _WIN32 was defined, and
Cygwin defines __CYGWIN__ instead.
Fixes bug 6844; bugfix on 0.1.2.7-alpha.
This would be undefined behavior if it happened. (It can't actually
happen as we're using round_to_power_of_2, since we would have to
be trying to allocate exabytes of data.)
While we're at it, fix the behavior of round_to_power_of_2(0),
and document the function better.
Fix for bug 6831.
Our flag voting code needs to handle unrecognized flags, so it stores
them in a 64-bit bitfield. But we never actually checked for too many
flags, so we were potentially doing stuff like U64_LITERAL(1)<<flagnum
with flagnum >= 64. That's undefined behavior.
Fix for bug 6833; bugfix on 0.2.0.1-alpha.
097 hasn't seen a new version since 2007; we can drop support too.
This lets us remove our built-in sha256 implementation, and some
checks for old bugs.
This reverts commit 4aff97cfc7.
We don't actually want to be changing the torrc.sample on stable or
near-stable stuff, since doing so makes pointless busywork for debian
users.
When I removed version_supports_begindir, I accidentally removed the
mechanism we had been using to make a directory cache self-test its
directory port. This caused bug 6815, which caused 6814 (both in
0.2.4.2-alpha).
To fix this bug, I'm replacing the "anonymized_connection" argument to
directory_initiate_command_* with an enumeration to say how indirectly
to connect to a directory server. (I don't want to reinstate the
"version_supports_begindir" argument as "begindir_ok" or anything --
these functions already take too many arguments.)
For safety, I made sure that passing 0 and 1 for 'indirection' gives
the same result as you would have gotten before -- just in case I
missed any 0s or 1s.
We already do this for libevent; let's do it for openssl too.
For now, I'm making it always a warn, since this has caused some
problems in the past. Later, we can see about making it less severe.
we can turn it into an autobool later if we have some way for it
to make a decision.
(patch possibly got lost when nickm merged #6770; or maybe nickm meant
for it to be this way. i'm not sure.)
Add handle_fw_helper_output(), a function responsible for parsing the
output of tor-fw-helper. Refactor tor_check_port_forwarding() and
run_scheduled_events() accordingly too.
We now issue warnings when we get control output from tor-fw-helper,
and we log the verbose output of tor-fw-helper in LOG_INFO.
Conflicts:
src/common/util.c
get_lines_from_handle() is a multiplatform function which drains lines
from a stream and stuffs it into a smartlist. It's useful for
line-based protocols, like the one managed proxy and the tor-fw-helper
protocols.
