commit 9d7ee9785a6363e125ce1b0aa26e22fbe191dc7e Author: juga0 juga@riseup.net Date: Sat Feb 27 11:00:02 2021 +0000

fix: scanner: Return from measure if no helper

After refactoring in #40041, it was forgotten to return the error in the case a helper was not found, what can happen in test networks.

Closes #40065. --- sbws/core/scanner.py | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/sbws/core/scanner.py b/sbws/core/scanner.py index 5fd917a..f9ab1ce 100644 --- a/sbws/core/scanner.py +++ b/sbws/core/scanner.py @@ -346,11 +346,15 @@ def measure_relay(args, conf, destinations, cb, rl, relay): # Instead of ensuring that the relay can exit to all IPs, try first with # the relay as an exit, if it can exit to some IPs. if relay.is_exit_not_bad_allowing_port(dest.port): - circ_fps, nicknames, exit_policy = \ - create_path_relay(relay, dest, rl, cb, relay_as_entry=False) + r = create_path_relay(relay, dest, rl, cb, relay_as_entry=False) else: - circ_fps, nicknames, exit_policy = \ - create_path_relay(relay, dest, rl, cb) + r = create_path_relay(relay, dest, rl, cb) + # When `error_no_helper` is triggered because a helper is not found, what + # can happen in test networks with very few relays, it returns a list with + # the error. + if len(r) == 1: + return r + circ_fps, nicknames, exit_policy = r

# Build the circuit circ_id, reason = cb.build_circuit(circ_fps) @@ -378,8 +382,10 @@ def measure_relay(args, conf, destinations, cb, rl, relay): " to connect to %s via circuit %s (%s). Reason: %s. Trying again " "with it as entry.", relay.fingerprint, relay.nickname, exit_policy, dest.url, circ_fps, nicknames, usable_data) - circ_fps, nicknames, exit_policy = \ - create_path_relay(relay, dest, rl, cb) + r = create_path_relay(relay, dest, rl, cb) + if len(r) == 1: + return r + circ_fps, nicknames, exit_policy = r circ_id, reason = cb.build_circuit(circ_fps) if not circ_id: log.warning(