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2015-04-23Removed the obsolete rtsig module.Ruslan Ermilov1-16/+6
2015-04-22Removed the obsolete aio module.Ruslan Ermilov1-1/+1
2014-11-20Resolver: fixed debug event logging.Ruslan Ermilov1-10/+15
In 954867a2f0a6, we switched to using resolver node as the timer event data. This broke debug event logging. Replaced now unused ngx_resolver_ctx_t.ident with ngx_resolver_node_t.ident so that ngx_event_ident() extracts something sensible when accessing ngx_resolver_node_t as ngx_connection_t.
2014-11-20Resolver: fixed use-after-free memory access.Ruslan Ermilov1-4/+4
In 954867a2f0a6, we switched to using resolver node as the timer event data, so make sure we do not free resolver node memory until the corresponding timer is deleted.
2014-09-01Events: removed broken thread support from posted events.Valentin Bartenev1-11/+0
It's mostly dead code. And the idea of thread support for this task has been deprecated.
2014-08-19Resolver: notify all waiting requests on timeout.Ruslan Ermilov1-8/+16
If a "resolver_timeout" occurs, only the first waiting request was notified. Other requests may hang forever.
2014-07-16Resolver: fixed resend on malformed responses.Ruslan Ermilov1-2/+27
DNS request resend on malformed responses was broken in 98876ce2a7fd (1.5.8). Reported by Pramod Korathota.
2014-07-09Style: use ngx_str_null().Tatsuhiko Kubo1-2/+1
2014-03-06Fixed format specifier in logging of "c->number".Sergey Kandaurov1-1/+1
2014-02-20Resolver: properly handle connect() failures.Ruslan Ermilov1-11/+11
If initial attempt to connect() the UDP socket failed, e.g. due to network unreachable, no further attempts were made.
2014-01-10Resolver: added support for domain names with a trailing dot.Yichun Zhang1-0/+4
2013-12-16Resolver: use minimum TTL for caching (ticket #329).Ruslan Ermilov1-6/+7
2013-12-13Resolver: lookups are case-insensitive.Ruslan Ermilov1-3/+5
2013-12-09The "ipv6=" boolean parameter of the "resolver" directive.Ruslan Ermilov1-3/+35
When set to "off", only IPv4 addresses will be resolved, and no AAAA queries are ever sent.
2013-12-09Resolver: implemented IPv6 name to address resolving.Ruslan Ermilov1-59/+416
2013-12-06Resolver: implemented IPv6 address to name resolving.Ruslan Ermilov1-80/+386
2013-12-06Changed resolver API to use ngx_addr_t.Ruslan Ermilov1-77/+139
2013-12-13Resolver: fixed indentation.Ruslan Ermilov1-20/+20
2013-12-06Resolver: fixes in PTR processing.Ruslan Ermilov1-5/+12
Verify that class of RR is "IN". Verify that RR data length is non-zero.
2013-12-06Resolver: fixes in A processing.Ruslan Ermilov1-14/+25
Verify that class of RR is "IN". Verify that RR data length is exactly four octets. Correctly shift to the next RR if RR type is unknown.
2013-12-06Resolver: fixed response processing.Ruslan Ermilov1-6/+5
Stricten response header checks: ensure that reserved bits are zeroes, and that the opcode is "standard query". Fixed the "zero-length domain name in DNS response" condition.
2013-12-06Resolver: removed unnecessary casts.Ruslan Ermilov1-2/+2
2013-12-06Resolver: improved code readability.Ruslan Ermilov1-69/+83
Renamed ngx_resolver_query_t to ngx_resolver_hdr_t as it describes the header that is common to DNS queries and answers. Replaced the magic number 12 by the size of the header structure. The other changes are self-explanatory.
2013-09-04Win32: MinGW GCC compatibility.Maxim Dounin1-1/+1
Several warnings silenced, notably (ngx_socket_t) -1 is now checked on socket operations instead of -1, as ngx_socket_t is unsigned on win32 and gcc complains on comparison. With this patch, it's now possible to compile nginx using mingw gcc, with options we normally compile on win32.
2012-10-24Resolver: added missing memory allocation error handling.Maxim Dounin1-0/+4
2012-09-28Resolver: cached addresses are returned with random rotation now.Maxim Dounin1-2/+25
This ensures balancing when working with dynamically resolved upstream servers with multiple addresses. Based on patch by Anton Jouline.
2012-08-06Resolver: fixed possible memory leak in ngx_resolver_create().Maxim Dounin1-9/+9
Found by Coverity.
2012-06-18When "resolver" is configured with a domain name, only the firstRuslan Ermilov1-6/+8
resolved address was used. Now all addresses will be used.
2012-06-18Fixed crash in ngx_resolver_cleanup_tree().Ruslan Ermilov1-4/+3
If sending a DNS request fails with an error (e.g., when mistakenly trying to send it to a local IP broadcast), such a request is not deleted if there are clients waiting on it. However, it was still erroneously removed from the queue. Later ngx_resolver_cleanup_tree() attempted to remove it from the queue again that resulted in a NULL pointer dereference.
2012-06-04Support for IPv6 literals and an optional port in resolver.Ruslan Ermilov1-5/+5
2012-06-03Resolver: fixed format specification.Maxim Dounin1-1/+1
Patch by Yichun Zhang (agentzh).
2012-05-22Fixed potential null pointer dereference in ngx_resolver_create().Ruslan Ermilov1-1/+6
While here, improved error message.
2012-05-14Resolver: protection from duplicate responses.Maxim Dounin1-2/+10
If we already had CNAME in resolver node (i.e. rn->cnlen and rn->u.cname set), and got additional response with A record, it resulted in rn->cnlen set and rn->u.cname overwritten by rn->u.addr (or rn->u.addrs), causing segmentation fault later in ngx_resolver_free_node() on an attempt to free overwritten rn->u.cname. The opposite (i.e. CNAME got after A) might cause similar problems as well.
2012-04-26Fixed segmentation fault in ngx_resolver_create_name_query().Ruslan Ermilov1-0/+4
If name passed for resolution was { 0, NULL } (e.g. as a result of name server returning CNAME pointing to ".") pointer wrapped to (void *) -1 resulting in segmentation fault on an attempt to dereference it. Reported by Lanshun Zhou.
2012-03-22Resolver: added missing sanity checking when creating name queries.Maxim Dounin1-1/+5
Found by Veracode.
2012-02-27Fix of rbtree lookup on hash collisions.Maxim Dounin1-11/+6
Previous code incorrectly assumed that nodes with identical keys are linked together. This might not be true after tree rebalance. Patch by Lanshun Zhou.
2012-02-27Fixed null pointer dereference in resolver (ticket #91).Maxim Dounin1-5/+6
The cycle->new_log.file may not be set before config parsing finished if there are no error_log directive defined at global level. Fix is to copy it after config parsing. Patch by Roman Arutyunyan.
2012-02-13Time parsing cleanup.Maxim Dounin1-1/+1
Nuke NGX_PARSE_LARGE_TIME, it's not used since 0.6.30. The only error ngx_parse_time() can currently return is NGX_ERROR, check it explicitly and make sure to cast it to appropriate type (either time_t or ngx_msec_t) to avoid signedness warnings on platforms with unsigned time_t (notably QNX).
2012-01-18Copyright updated.Maxim Konovalov1-0/+1
2011-11-16Silenced a warning for some compilers.Ruslan Ermilov1-0/+1
2011-11-16Now nginx uses TTL of a DNS response when calculating cache validity.Ruslan Ermilov1-6/+38
Previously it used a hardcoded value of 300 seconds. Also added the "valid=" parameter to the "resolver" directive that can be used to override the cache validity time. Patch by Kirill A. Korinskiy with minor changes.
2011-11-09Fixed compression pointer processing in DNS response greater than 255 bytes.Igor Sysoev1-7/+7
Thanks to Ben Hawkes.
2011-10-24Support of several servers in the "resolver" directive.Igor Sysoev1-14/+44
Patch by Kirill A. Korinskiy.
2011-04-23fix building by gcc 4.6 without --with-debugIgor Sysoev1-4/+4
2010-09-27decrease resolver errors level to errorIgor Sysoev1-1/+1
2010-06-23style fixIgor Sysoev1-1/+1
2010-01-11add context to a resolver logIgor Sysoev1-13/+41
2009-12-02remove stale commentIgor Sysoev1-2/+0
2009-11-11use ngx_resolver_alloc() instead of ngx_resolver_calloc()Igor Sysoev1-2/+2
since all fields are filled
2009-11-11fix resolving an empty name (".")Igor Sysoev1-5/+5
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