In order to decrease code duplication, express the logic contained in
all zone logging functions using dns_zone_logv() calls.
(cherry picked from commit 5c03cd339e)
Add a new libdns function, dns_zone_logv(), which takes a single va_list
argument rather than a variable number of arguments and can be used as a
base for implementing more specific zone logging functions.
(cherry picked from commit bb2dfb3f49)
- incidentally fixed a bug in the dnssec system test where TTLs in the
answer section rather than the additional section were being checked
(cherry picked from commit 8d923a05a9)
Interrupt query processing when query_recurse() attempts to ask the same
name servers for the same QNAME/QTYPE tuple for two times in a row as
this indicates that query processing may be stuck for an indeterminate
period of time, e.g. due to interactions between features able to
restart query_lookup().
(cherry picked from commit d1de99bc587480eb51a38b23c8aaf4d34c0c92d2)
check_stale_header() fails to update the pointer to the previous header
while processing rdataset headers eligible for serve-stale, thus
enabling rdataset headers to be leaked (i.e. disassociated from a node
and left on the relevant TTL heap) while iterating through a node. This
can lead to several different assertion failures. Add the missing
pointer update.
(cherry picked from commit cf9cb7cd0013610c8978808aab9d6bae9fe57a4b)
Certain isc_buffer_*() functions might call memmove() with the second
argument (source) set to NULL and the third argument (length) set to 0.
While harmless, it triggers an ubsan warning:
runtime error: null pointer passed as argument 2, which is declared to never be null
Modify all memmove() call sites in lib/isc/include/isc/buffer.h and
lib/isc/buffer.c which may potentially use NULL as the second argument
(source) so that memmove() is only called if the third argument (length)
is non-zero.
(cherry picked from commit 6ddbca6f2b)
compare_rdata() was meant to be used as a qsort() callback. Meanwhile,
dns_rdataslab_merge() calls compare_rdata() for a pair of dns_rdata_t
structures rather than a pair of struct xrdata structures, which is
harmless, but triggers an ubsan warning:
rdataslab.c:84:33: runtime error: member access within address <address> with insufficient space for an object of type 'const struct xrdata'
Use dns_rdata_compare() instead of compare_rdata() to prevent the
warning from being triggered.
(cherry picked from commit 9bc6ba0be9)
With 1044 res contexts, each with 65536 debuglink structs of 16 bytes
each, the debuglink table itself was consuming 1GB+ of memory.
(cherry picked from commit b9886abd86)
Add a new ATF test, sigs_test, containing everything required to start
defining test cases for dns__zone_updatesigs(). The framework is
written in a way which ensures that changes to zone database applied by
any dns__zone_updatesigs() invocation are preserved between subsequent
checks.
(cherry picked from commit 1f10186476)
Rename find_zone_keys() to dns__zone_findkeys() and move it to
lib/dns/zone_p.h, so that it can be used in unit tests. Add a comment
describing the purpose of this function.
(cherry picked from commit d7143986b1)
Rename update_sigs() to dns__zone_updatesigs() and move it to
lib/dns/zone_p.h, so that it can be unit tested. Add a comment
describing the purpose of this function.
(cherry picked from commit b1947cee82)
