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r8974@Kushana: nickm | 2006-09-28 17:05:59 -0400

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Improvement to last entry guards patch: track when we last attempted to connect to a node in our state file along with how long it has been unreachable.  Also clarify behavior of parse_iso_time() when it gets extra characters.


svn:r8520
This commit is contained in:
Nick Mathewson 2006-09-28 23:57:49 +00:00
parent 9988112c87
commit d3a06684bc
2 changed files with 18 additions and 3 deletions
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4
src/common/util.c
View File

@ -910,6 +910,10 @@ format_iso_time(char *buf, time_t t)
strftime(buf, ISO_TIME_LEN+1, "%Y-%m-%d %H:%M:%S", tor_gmtime_r(&t, &tm)); strftime(buf, ISO_TIME_LEN+1, "%Y-%m-%d %H:%M:%S", tor_gmtime_r(&t, &tm));
} }
/** Given an ISO-formatted UTC time value (after the epoch) in <b>cp</b>,
* parse it and store its value in *<b>t</b>. Return 0 on success, -1 on
* failure. Ignore extraneous stuff in <b>cp</b> separated by whitespace from
* the end of the time string. */
int int
parse_iso_time(const char *cp, time_t *t) parse_iso_time(const char *cp, time_t *t)
{ {

17
src/or/circuitbuild.c
View File

@ -2275,6 +2275,7 @@ entry_guards_parse_state(or_state_t *state, int set, char **msg)
break; break;
} else { } else {
time_t when; time_t when;
time_t last_try = 0;
if (!node) { if (!node) {
*msg = tor_strdup("Unable to parse entry nodes: " *msg = tor_strdup("Unable to parse entry nodes: "
"EntryGuardDownSince/UnlistedSince without EntryGuard"); "EntryGuardDownSince/UnlistedSince without EntryGuard");
@ -2285,10 +2286,16 @@ entry_guards_parse_state(or_state_t *state, int set, char **msg)
"Bad time in EntryGuardDownSince/UnlistedSince"); "Bad time in EntryGuardDownSince/UnlistedSince");
break; break;
} }
if (!strcasecmp(line->key, "EntryGuardDownSince")) if (strlen(line->value) >= ISO_TIME_LEN+ISO_TIME_LEN+1) {
/* ignore failure */
parse_iso_time(line->value+ISO_TIME_LEN+1, &last_try);
}
if (!strcasecmp(line->key, "EntryGuardDownSince")) {
node->unreachable_since = when; node->unreachable_since = when;
else node->last_attempted = last_try;
} else {
node->bad_since = when; node->bad_since = when;
}
} }
} }
@ -2348,8 +2355,12 @@ entry_guards_update_state(or_state_t *state)
if (e->unreachable_since) { if (e->unreachable_since) {
*next = line = tor_malloc_zero(sizeof(config_line_t)); *next = line = tor_malloc_zero(sizeof(config_line_t));
line->key = tor_strdup("EntryGuardDownSince"); line->key = tor_strdup("EntryGuardDownSince");
line->value = tor_malloc(ISO_TIME_LEN+1); line->value = tor_malloc(ISO_TIME_LEN+1+ISO_TIME_LEN+1);
format_iso_time(line->value, e->unreachable_since); format_iso_time(line->value, e->unreachable_since);
if (e->last_attempted) {
line->value[ISO_TIME_LEN] = ' ';
format_iso_time(line->value+ISO_TIME_LEN+1, e->last_attempted);
}
next = &(line->next); next = &(line->next);
} }
if (e->bad_since) { if (e->bad_since) {