~ubuntu-branches/ubuntu/quantal/openssl/quantal-security

* System libcrypto.dylib and libssl.dylib are used by system ld on MacOS X.

    NOTE: The problem described here only applies when OpenSSL isn't built

    with shared library support (i.e. without the "shared" configuration

    option).  If you build with shared library support, you will have no

    problems as long as you set up DYLD_LIBRARY_PATH properly at all times.

This is really a misfeature in ld, which seems to look for .dylib libraries

along the whole library path before it bothers looking for .a libraries.  This

means that -L switches won't matter unless OpenSSL is built with shared

library support.

The workaround may be to change the following lines in apps/Makefile and

test/Makefile:

  LIBCRYPTO=-L.. -lcrypto

  LIBSSL=-L.. -lssl

to:

  LIBCRYPTO=../libcrypto.a

  LIBSSL=../libssl.a

It's possible that something similar is needed for shared library support

as well.  That hasn't been well tested yet.

Another solution that many seem to recommend is to move the libraries

/usr/lib/libcrypto.0.9.dylib, /usr/lib/libssl.0.9.dylib to a different

directory, build and install OpenSSL and anything that depends on your

build, then move libcrypto.0.9.dylib and libssl.0.9.dylib back to their

original places.  Note that the version numbers on those two libraries

may differ on your machine.

As long as Apple doesn't fix the problem with ld, this problem building

OpenSSL will remain as is. Well, the problem was addressed in 0.9.8f by

passing -Wl,-search_paths_first, but it's unknown if the flag was

supported from the initial MacOS X release.

* Parallell make leads to errors

While running tests, running a parallell make is a bad idea.  Many test

scripts use the same name for output and input files, which means different

will interfere with each other and lead to test failure.

The solution is simple for now: don't run parallell make when testing.

* Bugs in gcc triggered

- According to a problem report, there are bugs in gcc 3.0 that are

  triggered by some of the code in OpenSSL, more specifically in

  PEM_get_EVP_CIPHER_INFO().  The triggering code is the following:

	header+=11;

	if (*header != '4') return(0); header++;

	if (*header != ',') return(0); header++;

  What happens is that gcc might optimize a little too agressively, and

  you end up with an extra incrementation when *header != '4'.

  We recommend that you upgrade gcc to as high a 3.x version as you can.

- According to multiple problem reports, some of our message digest

  implementations trigger bug[s] in code optimizer in gcc 3.3 for sparc64

  and gcc 2.96 for ppc. Former fails to complete RIPEMD160 test, while

  latter - SHA one.

  The recomendation is to upgrade your compiler. This naturally applies to

  other similar cases.

- There is a subtle Solaris x86-specific gcc run-time environment bug, which

  "falls between" OpenSSL [0.9.8 and later], Solaris ld and GCC. The bug

  manifests itself as Segmentation Fault upon early application start-up.

  The problem can be worked around by patching the environment according to

  http://www.openssl.org/~appro/values.c.

* solaris64-sparcv9-cc SHA-1 performance with WorkShop 6 compiler.

As subject suggests SHA-1 might perform poorly (4 times slower)

if compiled with WorkShop 6 compiler and -xarch=v9. The cause for

this seems to be the fact that compiler emits multiplication to

perform shift operations:-( To work the problem around configure

with './Configure solaris64-sparcv9-cc -DMD32_REG_T=int'.

* Problems with hp-parisc2-cc target when used with "no-asm" flag

When using the hp-parisc2-cc target, wrong bignum code is generated.

This is due to the SIXTY_FOUR_BIT build being compiled with the +O3

aggressive optimization.

The problem manifests itself by the BN_kronecker test hanging in an

endless loop. Reason: the BN_kronecker test calls BN_generate_prime()

which itself hangs. The reason could be tracked down to the bn_mul_comba8()

function in bn_asm.c. At some occasions the higher 32bit value of r[7]

is off by 1 (meaning: calculated=shouldbe+1). Further analysis failed,

as no debugger support possible at +O3 and additional fprintf()'s

introduced fixed the bug, therefore it is most likely a bug in the

optimizer.

The bug was found in the BN_kronecker test but may also lead to

failures in other parts of the code.

(See Ticket #426.)

Workaround: modify the target to +O2 when building with no-asm.

* Problems building shared libraries on SCO OpenServer Release 5.0.6

  with gcc 2.95.3

The symptoms appear when running the test suite, more specifically

test/ectest, with the following result:

OSSL_LIBPATH="`cd ..; pwd`"; LD_LIBRARY_PATH="$OSSL_LIBPATH:$LD_LIBRARY_PATH"; DYLD_LIBRARY_PATH="$OSSL_LIBPATH:$DYLD_LIBRARY_PATH"; SHLIB_PATH="$OSSL_LIBPATH:$SHLIB_PATH"; LIBPATH="$OSSL_LIBPATH:$LIBPATH"; if [ "debug-sco5-gcc" = "Cygwin" ]; then PATH="${LIBPATH}:$PATH"; fi; export LD_LIBRARY_PATH DYLD_LIBRARY_PATH SHLIB_PATH LIBPATH PATH; ./ectest

ectest.c:186: ABORT

The cause of the problem seems to be that isxdigit(), called from

BN_hex2bn(), returns 0 on a perfectly legitimate hex digit.  Further

investigation shows that any of the isxxx() macros return 0 on any

input.  A direct look in the information array that the isxxx() use,

called __ctype, shows that it contains all zeroes...

Taking a look at the newly created libcrypto.so with nm, one can see

that the variable __ctype is defined in libcrypto's .bss (which

explains why it is filled with zeroes):

$ nm -Pg libcrypto.so | grep __ctype

__ctype B 0011659c

__ctype2 U         

Curiously, __ctype2 is undefined, in spite of being declared in

/usr/include/ctype.h in exactly the same way as __ctype.

Any information helping to solve this issue would be deeply

appreciated.

NOTE: building non-shared doesn't come with this problem.

* ULTRIX build fails with shell errors, such as "bad substitution"

  and "test: argument expected"

The problem is caused by ULTRIX /bin/sh supporting only original

Bourne shell syntax/semantics, and the trouble is that the vast

majority is so accustomed to more modern syntax, that very few

people [if any] would recognize the ancient syntax even as valid.

This inevitably results in non-trivial scripts breaking on ULTRIX,

and OpenSSL isn't an exclusion. Fortunately there is workaround,

hire /bin/ksh to do the job /bin/sh fails to do.

1. Trick make(1) to use /bin/ksh by setting up following environ-

   ment variables *prior* you execute ./Configure and make:

	PROG_ENV=POSIX

	MAKESHELL=/bin/ksh

	export PROG_ENV MAKESHELL

   or if your shell is csh-compatible:

	setenv PROG_ENV POSIX

	setenv MAKESHELL /bin/ksh

2. Trick /bin/sh to use alternative expression evaluator. Create

   following 'test' script for example in /tmp:

	#!/bin/ksh

	${0##*/} "$@"

   Then 'chmod a+x /tmp/test; ln /tmp/test /tmp/[' and *prepend*

   your $PATH with chosen location, e.g. PATH=/tmp:$PATH. Alter-

   natively just replace system /bin/test and /bin/[ with the

   above script.

* hpux64-ia64-cc fails blowfish test.

Compiler bug, presumably at particular patch level. It should be noted

that same compiler generates correct 32-bit code, a.k.a. hpux-ia64-cc

target. Drop optimization level to +O2 when compiling 64-bit bf_skey.o.

* no-engines generates errors.

Unfortunately, the 'no-engines' configuration option currently doesn't

work properly.  Use 'no-hw' and you'll will at least get no hardware

support.  We'll see how we fix that on OpenSSL versions past 0.9.8.

* 'make test' fails in BN_sqr [commonly with "error 139" denoting SIGSEGV]

  if elder GNU binutils were deployed to link shared libcrypto.so.

As subject suggests the failure is caused by a bug in elder binutils,

either as or ld, and was observed on FreeBSD and Linux. There are two

options. First is naturally to upgrade binutils, the second one - to

reconfigure with additional no-sse2 [or 386] option passed to ./config.

* If configured with ./config no-dso, toolkit still gets linked with -ldl,

  which most notably poses a problem when linking with dietlibc.

We don't have framework to associate -ldl with no-dso, therefore the only

way is to edit Makefile right after ./config no-dso and remove -ldl from

EX_LIBS line.