commit 2ce132e335d60c7ef1d01aa00db5ab4c5b7d674f Author: Nick Mathewson <nickm@torproject.org> Date: Sun Mar 6 13:31:06 2011 -0500 Oops, here's the *REAL* fix for the ipv6 issue We need to _REJECT_ descriptors with accept6/reject6 lines. If we let them onto the network , other un-upgraded tors will crash. --- changes/ipv6_crash | 5 +++-- src/or/routerparse.c | 6 ++++++ 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/changes/ipv6_crash b/changes/ipv6_crash index 2b04355..02f8aaa 100644 --- a/changes/ipv6_crash +++ b/changes/ipv6_crash @@ -1,3 +1,4 @@ - o Major bugfixes (directory authority) + o Major bugfixes: - Fix a crash in parsing router descriptors containing IPv6 - addresses. Bugfix on 0.2.1.3-alpha. + addresses. This one crashed the directory authorities when somebody + fired up some experimental code. Bugfix on 0.2.1.3-alpha. diff --git a/src/or/routerparse.c b/src/or/routerparse.c index aa0687d..1faa177 100644 --- a/src/or/routerparse.c +++ b/src/or/routerparse.c @@ -1369,6 +1369,12 @@ router_parse_entry_from_string(const char *s, const char *end, router->has_old_dnsworkers = 1; } + if (find_opt_by_keyword(tokens, K_REJECT6) || + find_opt_by_keyword(tokens, K_ACCEPT6)) { + log_warn(LD_DIR, "Rejecting router with reject6/accept6 line: they crash " + "older Tors."); + goto err; + } exit_policy_tokens = find_all_exitpolicy(tokens); if (!smartlist_len(exit_policy_tokens)) { log_warn(LD_DIR, "No exit policy tokens in descriptor.");