There is a bad design choice in two of our configuration types,
where the empty string encodes a value that is not the same as the
default value. This design choice, plus an implementation mistake,
meant that config_dup() did not preserve the value of routerset_t,
and thereby caused bug #31495.
This comment-only patch documents the two types with the problem,
and suggests that implementors try to avoid it in the future.
Closes ticket 31907.
Rewrite format_node_description() and router_get_verbose_nickname() to
use strlcpy() and strlcat(). The previous implementation used memcpy()
and pointer arithmetic, which was error-prone.
Closes ticket 31545. This is CID 1452819.
These functions are all used to implement the ROUTERSET_type_defn
object, which maps strings to and from routerset_t configuration
variables for the configuration module.
routerset_t has two representations of an empty routerset: NULL, and
a set containing no elements. But some of our config code assumes
that empty routersets are represented as NULL. So let's give it
what it assumes.
Fixes bug 31495. Bugfix on e16b90b88a76; but not in any released
Tor.
There is other code that uses this value, and some of it is
apparently reachable from inside router_dir_info_changed(), which
routerlist_free() apparently calls. (ouch!) This is a minimal fix
to try to resolve the issue without causing other problems.
Fixes bug 31003. I'm calling this a bugfix on 0.1.2.2-alpha, where
the call to router_dir_info_changed() was added to routerlist_free().
Adds ROUTER_AUTHDIR_BUG_ANNOTATIONS to was_router_added_t.
The out-of-order numbering is deliberate: it will be fixed by later commits
for 16564.
Fixes bug 30780; bugfix on 0.2.0.8-alpha.
For various reasons, this was a nontrivial movement. There are
several places in the code where we do something like "update the
flags on this routerstatus or node if we're an authority", and at
least one where we pretended to be an authority when we weren't.
The nodelist_idx for each node_t serves as a unique identifier for
the node, so we can use a bitarray to hold all the excluded
nodes, and then remove them from the smartlist.
Previously use used smartlist_subtract(sl, excluded), which is
O(len(sl)*len(excluded)).
We can use this function in other places too, but this is the one
that showed up on the profiles of 30291.
Closes ticket 30307.
In this patch we lower the log level of the failures for the three calls
to unlink() in networkstatus_set_current_consensus(). These errors might
trigger on Windows because the memory mapped consensus file keeps the
file in open state even after we have close()'d it. Windows will then
error on the unlink() call with a "Permission denied" error.
The consequences of ignoring these errors is that we leave an unused
file around on the file-system, which is an easier way to fix this
problem right now than refactoring networkstatus_set_current_consensus().
See: https://bugs.torproject.org/29930
