This is the very first tracepoint in tor. It is in the circuit subsystem for
when a new circuit opens.

LTTng instrumentation requires lot more around a tracepoint than USDT thus
this commit only adds one tracepoint in order to outline a base to add more
tracepoints later.

The idea is that we separate subsystem into what LTTng defines as "providers"
so the circuit provider contains the tracepoint definitions for the circuit
subsystem.

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

No probes at this point. They are per subsystem and thus in later commits.

Part of #32910

This commit adds both configure options and probe generation for tracepoints.

Part of #32910

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

In the next commits, we'll add more tracing options for instrumentation and
specific tracer.

This rename follows a more meaningful naming standard. It also adds a catch
all "HAVE_TRACING" define that indicate in the code that we have tracing
enabled.

Part of #32910

Signed-off-by: David Goulet <dgoulet@torproject.org>

This warning only affects platforms (like win32) with 32-bit time_t.

Fixes bug 40028; bugfix on 0.3.2.8-rc.

If no Address statement are found in the configuration file, attempt to learn
our address by looking at the ORPort address if any. Specifying an address is
optional so if we can't find one, it is fine, we move on to the next discovery
mechanism.

Note that specifying a hostname on the ORPort is not yet supported at this
commit.

Closes #33236

Signed-off-by: David Goulet <dgoulet@torproject.org>

Now that we have src/ext/ext.md (since b0a716df), we
don't want to have src/ext excluded in its entirety.

Like a smart person, when I added src/ext/ext.md, I edited Doxyfile,
forgetting that it is generated from Doxyfile.in.  :/

This should fix travis builds.

For some reasons, Appveyor started to use the stdio printf format for 64 bit
values (PRIu64, ...). Mingw doesn't like that so force it to use the Windows
specific macros by setting D__USE_MINGW_ANSI_STDIO=0.

Fixes #40026

Unit tests also suffered from a memleak.

Closes #40024

Signed-off-by: David Goulet <dgoulet@torproject.org>

If at least one service is configured as a version 2, a log warning is emitted
once and only once.

Closes #40003

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

We introduce TOR_EXTRA_PRE_COMMIT_CHECKS environment variable to run the
pre-commit hook. The pre-push git hook will set it in order to run all
pre-commit checks.

Signed-off-by: David Goulet <dgoulet@torproject.org>