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r11283@catbus: nickm | 2007-01-23 19:20:47 -0500

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Add documentation to dns.c (mainly to test new buildbot version)


svn:r9393
This commit is contained in:
Nick Mathewson 2007-01-24 00:20:49 +00:00
parent 79dd306527
commit 2522c392bd
1 changed files with 18 additions and 2 deletions
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20
src/or/dns.c
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@ -935,6 +935,8 @@ add_answer_to_cache(const char *address, int is_reverse, uint32_t addr,
set_expiry(resolve, time(NULL) + dns_get_expiry_ttl(ttl));
}
/** Return true iff <b>address</b> is one of the addresses we use to verify
* that well-known sites aren't being hijacked by our DNS servers. */
static INLINE int
is_test_address(const char *address)
{
@ -1739,12 +1741,19 @@ static strmap_t *dns_wildcard_response_count = NULL;
* nameserver wants to return in response to requests for nonexistent domains.
*/
static smartlist_t *dns_wildcard_list = NULL;
/** True iff we've logged about a single address getting wildcarded.
* Subsequent warnings will be less severe. */
static int dns_wildcard_one_notice_given = 0;
/** True iff we've warned that our DNS server is wildcarding too many failures.
*/
static int dns_wildcard_notice_given = 0;
/** DOCDOC */
/** List of supposedly good addresses that are getting wildcarded to the
* same addresses as nonexistent addresses. */
static smartlist_t *dns_wildcarded_test_address_list = NULL;
/** True iff we've warned about a test address getting wildcarded */
static int dns_wildcarded_test_address_notice_given = 0;
/** True iff all addresses seem to be getting wildcarded. */
static int dns_is_completely_invalid = 0;
/** Called when we see <b>id</b> (a dotted quad) in response to a request for
@ -1779,6 +1788,8 @@ wildcard_increment_answer(const char *id)
}
}
/** Note that a single test address (one believed to be good) seems to be
* getting redirected to the same IP as failures are. */
static void
add_wildcarded_test_address(const char *address)
{
@ -1864,6 +1875,8 @@ launch_wildcard_check(int min_len, int max_len, const char *suffix)
tor_free(addr);
}
/** Launch attempts to resolve a bunch of known-good addresses (configured in
* ServerDNSTestAddresses). [Callback for a libevent timer] */
static void
launch_test_addresses(int fd, short event, void *args)
{
@ -1919,7 +1932,8 @@ dns_launch_wildcard_checks(void)
}
}
/* DOCDOC */
/** If appropriate, start testing whether our DNS servers tend to lie to
* us. */
void
dns_launch_correctness_checks(void)
{
@ -1937,12 +1951,14 @@ dns_launch_correctness_checks(void)
evtimer_add(&launch_event, &timeout);
}
/** Return true iff our DNS servers lie to us too much to be trustd. */
int
dns_seems_to_be_broken(void)
{
return dns_is_completely_invalid;
}
/** Forget what we've previously learned about our DNS servers' correctness. */
void
dns_reset_correctness_checks(void)
{