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If OPENSSL_init_crypto() hasn't been called yet when ERR_get_state()
is called, it need to be called early, so the base initialization is
done. On some platforms (those who support DSO functionality and
don't define OPENSSL_USE_NODELETE), that includes a call of
ERR_set_mark(), which calls this function again.
Furthermore, we know that ossl_init_thread_start(), which is called
later in ERR_get_state(), calls OPENSSL_init_crypto(0, NULL), except
that's too late.
Here's what happens without an early call of OPENSSL_init_crypto():
=> ERR_get_state():
=> CRYPTO_THREAD_get_local():
<= NULL;
# no state is found, so it gets allocated.
=> ossl_init_thread_start():
=> OPENSSL_init_crypto():
# Here, base_inited is set to 1
# before ERR_set_mark() call
=> ERR_set_mark():
=> ERR_get_state():
=> CRYPTO_THREAD_get_local():
<= NULL;
# no state is found, so it gets allocated!!!!!
=> ossl_init_thread_start():
=> OPENSSL_init_crypto():
# base_inited is 1,
# so no more init to be done
<= 1
<=
=> CRYPTO_thread_set_local():
<=
<=
<=
<= 1
<=
=> CRYPTO_thread_set_local() # previous value removed!
<=
Result: double allocation, and we have a leak.
By calling the base OPENSSL_init_crypto() early, we get this instead:
=> ERR_get_state():
=> OPENSSL_init_crypto():
# Here, base_inited is set to 1
# before ERR_set_mark() call
=> ERR_set_mark():
=> ERR_get_state():
=> OPENSSL_init_crypto():
# base_inited is 1,
# so no more init to be done
<= 1
=> CRYPTO_THREAD_get_local():
<= NULL;
# no state is found, so it gets allocated
# let's assume we got 0xDEADBEEF
=> ossl_init_thread_start():
=> OPENSSL_init_crypto():
# base_inited is 1,
# so no more init to be done
<= 1
<= 1
=> CRYPTO_thread_set_local():
<=
<=
<=
<= 1
=> CRYPTO_THREAD_get_local():
<= 0xDEADBEEF
<= 0xDEADBEEF
Result: no leak.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4913)
(cherry picked from commit aef84bb4efbddfd95d042f3f5f1d362ed7d4faeb)
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Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4876)
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Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d3d880ce01cfaf0091f46a2f6b5bd146d47a93e7)
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- Ignoring the return code of ossl_init_thread_start created a memory leak.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3712)
(cherry picked from commit af6de400b49c011600cfd557319d1142da6e5cbd)
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Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3672)
(cherry picked from commit 4fc426b78964b3d234cb7b1b6112c9b80e16a13a)
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Thanks to Jan Alexander Steffens for finding the bug and confirming the
fix.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3592)
(cherry picked from commit 73bc53708c386c1ea85941d345721e23dc61c05c)
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Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3388)
(cherry picked from commit 1d3235f85c4b0e51b6baf7d8b89089c6c77f6928)
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Bug found and fix suggested by Julian Rüth.
Push error if fflush fails
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3266)
(cherry picked from commit 595b2a42375427a254ad5a8c85870efea839a9b9)
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Fixes #3033
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3035)
(cherry picked from commit 165f1c3ef39680471339d21b9f6c12ea86b4a26a)
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TTY_get() sometimes surprises us with new errno values to determine if
we have a controling terminal or not. This generated error is a
helpful tool to figure out that this was what happened and what the
unknown value is.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2043)
(cherry picked from commit 4984448648f69ed4425df68900b1fd6f17c6c271)
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If len == 0 in a call to ERR_error_string_n() then we can read beyond the
end of the buffer. Really applications should not be calling this function
with len == 0, but we shouldn't be letting it through either!
Thanks to Agostino Sarubbo for reporting this issue. Agostino's blog on
this issue is available here:
https://blogs.gentoo.org/ago/2016/10/14/openssl-libcrypto-stack-based-buffer-overflow-in-err_error_string_n-err-c/
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit e5c1361580d8de79682958b04a5f0d262e680f8b)
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Certain functions are automatically called during auto-deinit in order
to deallocate resources. However, if we have never entered a function which
marks lib crypto as inited then they never get called. This can happen if
the user only ever makes use of a small sub-set of functions that don't hit
the auto-init code.
This commit ensures all such resources deallocated by these functions also
init libcrypto when they are initially allocated.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Ben Laurie <ben@openssl.org>
(cherry picked from commit 135648bcd0e9db029582d3d7627a90a1b566c5d6)
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Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1389)
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Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1389)
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Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #1330
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That way, we have a way to check if the init function was successful
or not.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
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Commit aea145e removed some error codes that are generated
algorithmically: mapping alerts to error texts. Found by
Andreas Karlsson. This restores them, and adds two missing ones.
Reviewed-by: Matt Caswell <matt@openssl.org>
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There are 3 OPENSSL_API_COMPAT values that are incorrect in the header
files, and one inconsistency between the header and the .c
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Files like dh.pod, etc., mostly duplicated the API-specific pod files.
Removed the duplicated content; that often mean the whole file could
be removed. Some of the content about internals got moved into README
files in the source tree. Some content (e.g., err.pod) got moved
into other pod pages.
Annotate generic pages, remove dup NAME
Reviewed-by: Richard Levitte <levitte@openssl.org>
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The function strerror() is not thread safe. We should use strerror_r()
where possible, or strerror_s() on Windows.
RT#2267
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Add script to find unused err/reason codes
Remove unused reason codes.
Remove entries for unused functions
Reviewed-by: Matt Caswell <matt@openssl.org>
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STORE doesn't exist for now
HMAC doesn't have any error codes
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Richard Levitte <levitte@openssl.org>
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Document thread-safe lock creation
Reviewed-by: Richard Levitte <levitte@openssl.org>
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The ERR_remove_thread_state() API is restored to take a pointer
argument, but does nothing more. ERR_remove_state() is also made into
a no-op. Both functions are deprecated and users are recommended to
use OPENSSL_thread_stop() instead.
Documentation is changed to reflect this.
Reviewed-by: Matt Caswell <matt@openssl.org>
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The Unix build was the last to retain the classic build scheme. The
new unified scheme has matured enough, even though some details may
need polishing.
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Running a "make update" wanted to add err_cleanup to libcrypto.num which
is wrong.
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Some locks were not being properly cleaned up during close down.
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Reviewed-by: Matt Caswell <matt@openssl.org>
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There is a preference for suffixes to indicate that a function is internal
rather than prefixes. Note: the suffix is only required to disambiguate
internal functions and public symbols with the same name (but different
case)
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
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There was a lot of naming inconsistency, so we try and standardise on
one form.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
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ERR_free_strings() should not be called expicitly - we should leave
auto-deinit to clean this up instead.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Misc fixes for no-ocsp
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Matt Caswell <matt@openssl.org>
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Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
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Reviewed-by: Richard Levitte <levitte@openssl.org>
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This removes all scripts that deal with MINFO as well, since that's
only used by mk1mf.
Reviewed-by: Andy Polyakov <appro@openssl.org>
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Don't have #error statements in header files, but instead wrap
the contents of that file in #ifndef OPENSSL_NO_xxx
This means it is now always safe to include the header file.
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Reviewed-by: Rich Salz <rsalz@openssl.org>
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All OpenSSL code has now been transferred to use the new threading API,
so the old one is no longer used and can be removed. We provide some compat
macros for removed functions which are all no-ops.
There is now no longer a need to set locking callbacks!!
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
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Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Ben Laurie <ben@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
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This takes us away from the idea that we know exactly how our static
libraries are going to get used. Instead, we make them available to
build shareable things with, be it other shared libraries or DSOs.
On the other hand, we also have greater control of when the shared
library cflags. They will never be used with object files meant got
binaries, such as apps/openssl or test/test*.
With unified, we take this a bit further and prepare for having to
deal with extra cflags specifically to be used with DSOs (dynamic
engines), libraries and binaries (applications).
Reviewed-by: Rich Salz <rsalz@openssl.org>
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All those flags existed because we had all the dependencies versioned
in the repository, and wanted to have it be consistent, no matter what
the local configuration was. Now that the dependencies are gone from
the versioned Makefile.ins, it makes much more sense to use the exact
same flags as when compiling the object files.
Reviewed-by: Rich Salz <rsalz@openssl.org>
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Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
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Add utility macros REF_ASSERT_NOT and REF_PRINT_COUNT
This is also RT 4181
Reviewed-by: Richard Levitte <levitte@openssl.org>
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If init failed we'd like to set an error code to indicate that. But if
init failed then when the error system tries to load its strings its going
to fail again. We could get into an infinite loop. Therefore we just set
a single error the first time around. After that no error is set.
Reviewed-by: Rich Salz <rsalz@openssl.org>
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