Introduce `ares_txt_ext` structure with an extra `record_start`
field, which indicates a start of a new TXT record, thus allowing to
differentiate the chunks in the same record, from a chunks in a
different record.
Introduce a new API method: `ares_parse_txt_reply_ext` that works with
this kind of struct.
Add a new ares_library_init_mem() initialization function for the
library which allows the library user to specify their own malloc,
realloc & free equivalents for use library-wide.
Store these function pointers in library-wide global variables,
defaulting to libc's malloc(), realloc() and free().
Change all calls to malloc, realloc and free to use the function pointer
instead. Also ensure that ares_strdup() is always available
(even if the local environment includes strdup(3)), and change the
library code to always use it.
Convert calls to calloc() to use ares_malloc() + memset
If we get an allocation failure when processing a particular substring in a
TXT record, that failure is silently lost; fix that by propagating errors from
the inner loop to the outer loop.
to return a linked lists of results. These were also modified to internally
use the ares_data memory struct and as such its result must be free'ed with
ares_free_data().
shows that this one is actually a modified copy of ares_parse_a_reply.c.
In order to comply with ares_parse_a_reply.c's M.I.T. license, the old
1998 M.I.T. copyright notice is now also preserved in this file the same
as it is done in other ares_parse_*.c files.
ares_parse_txt_reply() current version:
- Fixed a couple of potential double free's.
- Fixed memory leaks upon out of memory condition.
- Fixed pointer arithmetic.
- Setting ntxtreply to zero upon entry for all failure cases.
- Changed data type to size_t for variables substr_len, str_len and
the length member of ares_txt_reply struct.
- Avoided a couple of memcpy() calls.
- Changed i data type to unsigned int to prevent compiler warnings.
- Adjusted a comment.
- Use ARES_SUCCESS literal for successfull completion.
- Added CVS Id tag.
Fedor Indutny
David Drysdale
Patrick Valsecchi
Yang Tse
Daniel Stenberg