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r9770@danube: weasel | 2006-09-15 07:20:05 +0200

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router_set_networkstatus() gets a list of status documents we asked for from
 connection_dir_client_reached_eof().  However, as a cache we (sometimes?) just
 ask for "all".  router_set_networkstatus() would freak out over that, meaning
 it would log a warning and drop the status document instead of caching it
 as it is supposed to.  Now we let router_set_networkstatus() know if the
 data comes from an all-request so it can do the right thing.


svn:r8398
This commit is contained in:
Peter Palfrader 2006-09-15 05:20:16 +00:00
parent 5beb114744
commit ba091ae5d7
3 changed files with 22 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/or/directory.c
View File

@ -990,6 +990,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
if (conn->_base.purpose == DIR_PURPOSE_FETCH_NETWORKSTATUS) {
smartlist_t *which = NULL;
int source;
char *cp;
log_info(LD_DIR,"Received networkstatus objects (size %d) from server "
"'%s:%d'",(int) body_len, conn->_base.address, conn->_base.port);
@ -1006,11 +1007,13 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
note_request(was_compressed?"dl/status.z":"dl/status", orig_len);
if (conn->requested_resource &&
!strcmpstart(conn->requested_resource,"fp/")) {
source = NS_FROM_DIR_BY_FP;
which = smartlist_create();
dir_split_resource_into_fingerprints(conn->requested_resource+3,
which, NULL, 0, 0);
} else if (conn->requested_resource &&
!strcmpstart(conn->requested_resource, "all")) {
source = NS_FROM_DIR_ALL;
which = smartlist_create();
SMARTLIST_FOREACH(router_get_trusted_dir_servers(),
trusted_dir_server_t *, ds,
@ -1019,6 +1022,11 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
base16_encode(cp, HEX_DIGEST_LEN+1, ds->digest, DIGEST_LEN);
smartlist_add(which, cp);
});
} else {
/* Can we even end up here? -- weasel*/
source = NS_FROM_DIR_BY_FP;
log_warn(LD_BUG, "we received a networkstatus but we did neither ask"
"for it by fp/ nor did we ask for all.");
}
cp = body;
while (*cp) {
@ -1026,7 +1034,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
if (next)
next[1] = '\0';
/* learn from it, and then remove it from 'which' */
if (router_set_networkstatus(cp, time(NULL), NS_FROM_DIR, which)<0)
if (router_set_networkstatus(cp, time(NULL), source, which)<0)
break;
if (next) {
next[1] = 'n';

2
src/or/or.h
View File

@ -2559,7 +2559,7 @@ void router_load_routers_from_string(const char *s,
saved_location_t saved_location,
smartlist_t *requested_fingerprints);
typedef enum {
NS_FROM_CACHE, NS_FROM_DIR, NS_GENERATED
NS_FROM_CACHE, NS_FROM_DIR_BY_FP, NS_FROM_DIR_ALL, NS_GENERATED
} networkstatus_source_t;
int router_set_networkstatus(const char *s, time_t arrived_at,
networkstatus_source_t source,

11
src/or/routerlist.c
View File

@ -2199,7 +2199,8 @@ router_set_networkstatus(const char *s, time_t arrived_at,
if (!networkstatus_list)
networkstatus_list = smartlist_create();
if (source == NS_FROM_DIR && router_digest_is_me(ns->identity_digest)) {
if ( (source == NS_FROM_DIR_BY_FP || source == NS_FROM_DIR_ALL) &&
router_digest_is_me(ns->identity_digest)) {
/* Don't replace our own networkstatus when we get it from somebody else.*/
networkstatus_free(ns);
return 0;
@ -2211,6 +2212,7 @@ router_set_networkstatus(const char *s, time_t arrived_at,
} else {
char *requested =
smartlist_join_strings(requested_fingerprints," ",0,NULL);
if (source != NS_FROM_DIR_ALL) {
log_warn(LD_DIR,
"We received a network status with a fingerprint (%s) that we "
"never requested. (We asked for: %s.) Dropping.",
@ -2219,12 +2221,16 @@ router_set_networkstatus(const char *s, time_t arrived_at,
return 0;
}
}
}
if (!trusted_dir) {
if (!skewed && get_options()->DirPort) {
/* We got a non-trusted networkstatus, and we're a directory cache.
* This means that we asked an authority, and it told us about another
* authority we didn't recognize. */
log_info(LD_DIR,
"We do not recognize authority (%s) but we are willing "
"to cache it", fp);
add_networkstatus_to_cache(s, source, ns);
networkstatus_free(ns);
}
@ -2287,7 +2293,8 @@ router_set_networkstatus(const char *s, time_t arrived_at,
log_info(LD_DIR, "Setting networkstatus %s %s (published %s)",
source == NS_FROM_CACHE?"cached from":
(source==NS_FROM_DIR?"downloaded from":"generated for"),
((source == NS_FROM_DIR_BY_FP || source == NS_FROM_DIR_ALL) ?
"downloaded from":"generated for"),
trusted_dir->description, published);
networkstatus_list_has_changed = 1;
router_dir_info_changed();