commit 1ab641a70e1f2cc2548abfd03e62e3f8b04825d2 Author: Nick Mathewson nickm@torproject.org Date: Thu Sep 22 10:21:13 2016 -0400

Remove version_known, and subtly change the meaning of protocols_known --- src/or/networkstatus.c | 5 +++-- src/or/or.h | 8 ++------ src/or/routerlist.c | 5 +++-- src/or/routerparse.c | 2 +- 4 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/src/or/networkstatus.c b/src/or/networkstatus.c index 3299a2c..f113777 100644 --- a/src/or/networkstatus.c +++ b/src/or/networkstatus.c @@ -1456,8 +1456,9 @@ routerstatus_has_changed(const routerstatus_t *a, const routerstatus_t *b) a->is_valid != b->is_valid || a->is_possible_guard != b->is_possible_guard || a->is_bad_exit != b->is_bad_exit || - a->is_hs_dir != b->is_hs_dir || - a->version_known != b->version_known; + a->is_hs_dir != b->is_hs_dir; + // XXXX this function needs a huge refactoring; it has gotten out + // XXXX of sync with routerstatus_t, and it will do so again. }

/** Notify controllers of any router status entries that changed between diff --git a/src/or/or.h b/src/or/or.h index befbf71..7c7163f 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -2193,12 +2193,8 @@ typedef struct routerstatus_t { unsigned int is_v2_dir:1; /** True iff this router publishes an open DirPort * or it claims to accept tunnelled dir requests. */ - /** True iff we know version info for this router. (i.e., a "v" entry was - * included.) We'll replace all these with a big tor_version_t or a char[] - * if the number of traits we care about ever becomes incredibly big. */ - unsigned int version_known:1; - - /** True iff we have a proto line for this router.*/ + /** True iff we have a proto line for this router, or a versions line + * from which we could infer the protocols. */ unsigned int protocols_known:1;

/** True iff this router has a version or protocol list that allows it to diff --git a/src/or/routerlist.c b/src/or/routerlist.c index 0a03f13..0e637f4 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -5526,7 +5526,8 @@ routerinfo_has_curve25519_onion_key(const routerinfo_t *ri) }

/* Is rs running a tor version known to support ntor? - * If allow_unknown_versions is true, return true if the version is unknown. + * If allow_unknown_versions is true, return true if we can't tell + * (from a versions line or a protocols line) whether it supports ntor. * Otherwise, return false if the version is unknown. */ int routerstatus_version_supports_ntor(const routerstatus_t *rs, @@ -5536,7 +5537,7 @@ routerstatus_version_supports_ntor(const routerstatus_t *rs, return allow_unknown_versions; }

- if (!rs->version_known && !rs->protocols_known) { + if (!rs->protocols_known) { return allow_unknown_versions; }

diff --git a/src/or/routerparse.c b/src/or/routerparse.c index aecf6a2..d5690c1 100644 --- a/src/or/routerparse.c +++ b/src/or/routerparse.c @@ -2914,13 +2914,13 @@ routerstatus_parse_entry_from_string(memarea_t *area, } if ((tok = find_opt_by_keyword(tokens, K_V))) { tor_assert(tok->n_args == 1); - rs->version_known = 1; if (!strcmpstart(tok->args[0], "Tor ") && !found_protocol_list) { /* We only do version checks like this in the case where * the version is a "Tor" version, and where there is no * list of protocol versions that we should be looking at instead. */ rs->supports_extend2_cells = tor_version_as_new_as(tok->args[0], "0.2.4.8-alpha"); + rs->protocols_known = 1; } if (vote_rs) { vote_rs->version = tor_strdup(tok->args[0]);