This function has a nasty API, since whether or not it invokes the
resolver depends on whether one of its arguments is NULL. That's a
good way for accidents to happen.
This patch incidentally makes tor-resolve support socks hosts on
IPv6.
Previously the coverage on this function was mostly accidental,
coming as it did from test_entryconn.c. These new tests use mocking
to ensure that we actually hit the different failure and retry cases
of addressmap_get_virtual_address(), and make our test coverage a
bit more deterministic.
Closes ticket 25993.
The functions it warns about are:
assert, memcmp, strcat, strcpy, sprintf, malloc, free, realloc,
strdup, strndup, calloc.
Also, fix a few lingering instances of these in the code. Use other
conventions to indicate _intended_ use of assert and
malloc/realloc/etc.
These wrappers went into place when the default type for our unit
test functions changed from "void fn(void)" to "void fn(void *arg)".
To generate this patch, I did the same hokey-pokey as before with
replacing all operators used as macro arguments, then I ran a
coccinelle script, then I ran perl script to fix up everything that
used legacy_test_helper, then I manually removed the
legacy_test_helper functions, then I ran a final perl script to put
the operators back how they were.
==============================
#!/usr/bin/perl -w -i -p
s/==,/_X_EQ_,/g;
s/!=,/_X_NE_,/g;
s/<,/_X_LT_,/g;
s/>,/_X_GT_,/g;
s/>=,/_X_GEQ_,/g;
s/<=,/_X_LEQ_,/g;
--------------------
@@
identifier func =~ "test_.*$";
statement S, S2;
@@
static void func (
-void
+void *arg
)
{
... when != S2
+(void) arg;
S
...
}
--------------------
#!/usr/bin/perl -w -i -p
s/, *legacy_test_helper, *([^,]+), *\&legacy_setup, *([^\}]+) *}/, $2, $1, NULL, NULL }/g;
--------------------
#!/usr/bin/perl -w -i -p
s/_X_NEQ_/!=/g;
s/_X_NE_/!=/g;
s/_X_EQ_/==/g;
s/_X_GT_/>/g;
s/_X_LT_/</g;
s/_X_GEQ_/>=/g;
s/_X_LEQ_/<=/g;
--------------------
If we had an address of the form "1.2.3.4" and we tried to pass it to
tor_inet_pton with AF_INET6, it was possible for our 'eow' pointer to
briefly move backwards to the point before the start of the string,
before we moved it right back to the start of the string. C doesn't
allow that, and though we haven't yet hit a compiler that decided to
nuke us in response, it's best to fix.
So, be more explicit about requiring there to be a : before any IPv4
address part of the IPv6 address. We would have rejected addresses
without a : for not being IPv6 later on anyway.
There was one "missing prototype" warning because the test function
wasn't static, and one "unused parameter" warning about the "data"
parameter.
Also, I added a couple of tests to make sure that the "make_null"
addresses really were the addresses we expected, by formatting them
as strings.
