Whenever we return with `PSFS_PASS_ON`, we need to update
`bytes_consumed` to not mislead the caller. Instead of fixing the
respective `if` clauses, we eschew the early bail-outs to simplify the
code a bit.
Per bug #76651 these changes do not appear to work correctly in
some cases. As no immediate fix seems to be forthcoming, I'm
reverting these changes.
Revert "Fixed invalid free introduced by d6e81f0bfd (avoid keeping "invalid" pointer)"
This reverts commit 11507c0e1b.
Revert "Fix mysqlnd build without openssl"
This reverts commit 6c9db02ff7.
Revert "Fix VC compilation as variable size array is not supported"
This reverts commit f96df64cb2.
Revert "Fix MySQL 8 auth"
This reverts commit d6e81f0bfd.
According to the POSIX specification of `getgrnam_r()` the result of
`sysconf(_SC_GETGR_R_SIZE_MAX)` is an initial value suggested for the
size of the buffer, and `ERANGE` signals that insufficient storage was
supplied. So if we get `ERANGE`, we try again with a buffer twice as
big, and so on, instead of failing.
The checks can issue reads below and above the temporary buffer. A read
itself doesn't seem dangerous, but the condition result can be
arbitrary. Such reads have to be avoided. Likely this patch should be
backported.
(cherry picked from commit b053beee7e)
Basically, the algorithm to append a converted string to an existing
`smart_str` works by increasing the `smart_str` buffer, to let `iconv`
convert characters until there is no more space, to set the new length
of the `smart_str` and to repeat until there is no more input.
Formerly, the new length calculation has been wrong, though, since we
would have to take the old `out_len` into account (`buf_growth -
old_out_len - out_len`). However, since there is no need to take the
old `out_len` into account when increasing the `smart_str` buffer, we
can simplify the fix, avoiding an additional variable.
We must not ignore erroneous characters in mime headers, but rather let
iconv_mime_decode() fail in this case, issuing the usual notice
regarding illegal characters.
We have to cater to the possibility that `=?` is not the start of an
encoded-word, but rather a literal `=?`. If a line break is found
while we're still looking for the charset, we can safely assume that
it's a literal `=?`, and act accordingly.
If we're expecting the start of an encoded word (`=?`), but instead of
the question mark get a line break (CR or LF), we must not append it to
the `pretval`.
There's no need to actually try to trigger an out-of-memory condition
to proof the leak; instead we can simply rely on the Zend MM to report
the memory leaks in debug mode (at least on Linux). Therefore we
simplify the regression test, which also makes it run much faster.
