Use BUF_strlcat() instead of strcat().
Use BIO_snprintf() instead of sprintf().
In some cases, keep better track of buffer lengths.
This is part of a large change submitted by Markus Friedl <markus@openbsd.org>
- Add missing bn_check_top() calls and relocate some others
- Use BN_is_zero() where appropriate
- Remove assert()s that bn_check_top() is already covering
- Simplify the code in places (esp. bn_expand2())
- Only keep ambiguous zero handling if BN_STRICT isn't defined
- Remove some white-space and make some other aesthetic tweaks
the same thing.
Also, I have some stuff on the back-burner related to some BN_CTX notes
from Peter Gutmann about his cryptlib hacks to the bignum code. The BN_CTX
comments are there to remind me of some relevant points in the code.
once in the source (where it is set for the benefit of no other code
whatsoever). I've deprecated the declaration in the header and likewise
made the use of the flag conditional in bn_lib.c. Note, this change also
NULLs the 'd' pointer in a BIGNUM when it is reset but not deallocated.
which, in turn, are used nowhere at all. This is a good thing because
bn_set_max() would currently generate code that wouldn't compile (BIGNUM
has no 'max' element).
The only apparent use for bn_set_[low|high] would be for implementing
windowing algorithms, and all of openssl's seem to use bn_***_words()
helpers instead (including the BN_div() that Nils fixed recently, which had
been using independently-coded versions of what these unused macros are
intended for). I'm therefore consigning these macros to cvs oblivion in the
name of readability.
bn_correct_top() or bn_check_top() depending on debug settings. For
internal source, all bn_fix_top()s should be converted one way or the other
depending on whether the use of bn_correct_top() is justified.
For BN_div_recp(), these cases should not require correction if the other
bignum functions are doing their jobs properly, so convert to
bn_check_top().
(ie. where top may be zero, or it may be one if the corresponding word is
set to zero). Note, this only affects the macros in bn.h, there are probably
similar corrections required in some c files.
Also, clarify the audit-related macros at the top of the header. Mental
note: I must not forget to clean all this out before 0.9.8 is released ...
that gets built before objects barfs all over the place because it
uses a new NID that hasn't had a chance of getting defined yet (in
this case, it was about a couple of new EC curves, and therefore a
couple of new corresponding NIDs).
I'm placing objects first in SDIRS! There.
PR: 732
Submitted by: Ilya Zakharevich <nospam-abuse@ilyaz.org>
Submitter's comment:
This patch:
a) Introduces a new file os2/backwardify.pl.
b) Introduces a new mk1mf.pl variable $preamble. As you can see, it may
be used also to move some OS-specific code to VC-CE too (the the
first chunk of the patch);
c) The DESCRIPTION specifier of the .def file is made more informative:
now it contains the version number too. On OS/2 it is made conformant
to OS/2 conventions; in particular, when one runs the standard command
BLDLEVEL this.DLL
one can see:
Vendor: www.openssl.org/
Revision: 0.9.7c
Description: OpenSSL: implementation of Secure Socket Layer; DLL for library crypto. Build for EMX -Zmtd
[I did not make Win32 descriptions as informative as this - I'm afraid to
break something. Be welcome to fix this.]
d) On OS/2 the generated DLL was hardly usable (it had a shared initialized
data segment).
e) On OS/2 the generated DLLs had names like ssl.dll. However, DLL names on
OS/2 are "global data". It is hard to have several DLLs with the same
name on the system. Thus this precluded coexistence of OpenSSL with DLLs
for other SLL implementations - or other name clashes. I transparently
changed the names of the DLLs to open_ssl.dll and cryptssl.dll.
f) The file added in (a) is used to create "forwarder" DLLs, so the
applications expecting the "old" DLL names may use the new DLLs
transparently. (A presence of these DLLs on the system nullifies (e),
but makes old applications work. This is a stopgap measure until the
old applications are relinked. Systems with no old applications do not
need these DLLs, so may enjoy all the benefits of (e).)
The new DLLs are placed in os2/ and os2/noname subdirectories.
g) The makefiles created with os2/OS2-EMX.cmd did not work (some mysterious
meaningless failures). The change to util/pl/OS2-EMX.pl uses the
variable introduced in (b) to switch the Makefiles to SHELL=sh syntax.
All these backslashes are removed, and the generated Makefiles started to
work.
h) Running os2/OS2-EMX.cmd now prints out what to do next.
