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Try to re-approximate the older semantics of nodelist_add_routerinfo

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This commit is contained in:
Nick Mathewson 2012-07-17 20:00:19 -04:00
parent dee4f068ee
commit 6208106c18
3 changed files with 36 additions and 48 deletions
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73
src/or/nodelist.c
View File

@ -115,63 +115,48 @@ node_get_or_create(const char *identity_digest)
return node;
}
/** Replace <b>old</b> router with <b>new</b> in nodelist. If
* <b>old</b> and <b>new</b> in fact are the same relays (having the
* same identity_digest) the node_t of <b>old</b> is used for
* <b>new</b>. Otherwise the node_t of <b>old</b> is dropped and
* <b>new</b> gets a new one (which might be a recycled node_t in
* case we already have one matching its identity).
*/
node_t *
nodelist_replace_routerinfo(routerinfo_t *old, routerinfo_t *new)
/** Called when a node's address changes. */
static void
node_addrs_changed(node_t *node)
{
node_t *node = NULL;
tor_assert(old);
tor_assert(new);
if (tor_memeq(old->cache_info.identity_digest,
new->cache_info.identity_digest, DIGEST_LEN)) {
/* NEW == OLD, reuse node_t. */
node = node_get_mutable_by_id(old->cache_info.identity_digest);
if (node) {
tor_assert(node->ri == old);
if (!routers_have_same_or_addrs(old, new)) {
/* These mustn't carry over when the address and orport
change. */
node->last_reachable = node->last_reachable6 = 0;
node->testing_since = node->testing_since6 = 0;
}
}
} else {
/* NEW != OLD, get a new node_t. */
nodelist_remove_routerinfo(old);
}
node = nodelist_add_routerinfo(node, new);
return node;
node->last_reachable = node->last_reachable6 = 0;
node->testing_since = node->testing_since6 = 0;
node->country = -1;
}
/** Add <b>ri</b> to the nodelist. If <b>node_in</b> is not NULL, use
that node rather than creating a new. */
/** Add <b>ri</b> to an appropriate node in the nodelist. If we replace an
* old routerinfo, and <b>ri_old_out</b> is not NULL, set *<b>ri_old_out</b>
* to the previous routerinfo.
*/
node_t *
nodelist_add_routerinfo(node_t *node_in, routerinfo_t *ri)
nodelist_set_routerinfo(routerinfo_t *ri, routerinfo_t **ri_old_out)
{
node_t *node = NULL;
node_t *node;
const char *id_digest;
int had_router = 0;
tor_assert(ri);
if (node_in) {
node = node_in;
init_nodelist();
id_digest = ri->cache_info.identity_digest;
node = node_get_or_create(id_digest);
if (node->ri) {
if (!routers_have_same_or_addrs(node->ri, ri)) {
node_addrs_changed(node);
}
had_router = 1;
if (ri_old_out)
*ri_old_out = node->ri;
} else {
tor_assert(ri);
init_nodelist();
node = node_get_or_create(ri->cache_info.identity_digest);
if (ri_old_out)
*ri_old_out = NULL;
}
node->ri = ri;
if (node->country == -1)
node_set_country(node);
if (authdir_mode(get_options())) {
if (authdir_mode(get_options()) && !had_router) {
const char *discard=NULL;
uint32_t status = dirserv_router_get_status(ri, &discard);
dirserv_set_node_flags_from_authoritative_status(node, status);

3
src/or/nodelist.h
View File

@ -15,8 +15,7 @@
node_t *node_get_mutable_by_id(const char *identity_digest);
const node_t *node_get_by_id(const char *identity_digest);
const node_t *node_get_by_hex_id(const char *identity_digest);
node_t *nodelist_replace_routerinfo(routerinfo_t *old, routerinfo_t *new);
node_t *nodelist_add_routerinfo(node_t *node, routerinfo_t *ri);
node_t *nodelist_set_routerinfo(routerinfo_t *ri, routerinfo_t **ri_old_out);
node_t *nodelist_add_microdesc(microdesc_t *md);
void nodelist_set_consensus(networkstatus_t *ns);

8
src/or/routerlist.c
View File

@ -2877,7 +2877,7 @@ routerlist_insert(routerlist_t *rl, routerinfo_t *ri)
&ri->cache_info);
smartlist_add(rl->routers, ri);
ri->cache_info.routerlist_index = smartlist_len(rl->routers) - 1;
nodelist_add_routerinfo(NULL, ri);
nodelist_set_routerinfo(ri, NULL);
router_dir_info_changed();
#ifdef DEBUG_ROUTERLIST
routerlist_assert_ok(rl);
@ -3106,7 +3106,11 @@ routerlist_replace(routerlist_t *rl, routerinfo_t *ri_old,
tor_assert(0 <= idx && idx < smartlist_len(rl->routers));
tor_assert(smartlist_get(rl->routers, idx) == ri_old);
nodelist_replace_routerinfo(ri_old, ri_new);
{
routerinfo_t *ri_old_tmp=NULL;
nodelist_set_routerinfo(ri_new, &ri_old_tmp);
tor_assert(ri_old == ri_old_tmp);
}
router_dir_info_changed();
if (idx >= 0) {