- 23 Feb, 2017 14 commits
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Benjamin Kaduk authored
Provide a callback interface that gives the application the ability to adjust the nascent SSL object at the earliest stage of ClientHello processing, immediately after extensions have been collected but before they have been processed. This is akin to BoringSSL's "select_certificate_cb" (though it is not API compatible), and as the name indicates, one major use is to examine the supplied server name indication and select what certificate to present to the client. However, it can also be used to make more sweeping configuration changes to the SSL object according to the selected server identity and configuration. That may include adjusting the permitted TLS versions, swapping out the SSL_CTX object (as is traditionally done in a tlsext_servername_callback), changing the server's cipher list, and more. We also wish to allow an early callback to indicate that it needs to perform additional work asynchronously and resume processing later. To that effect, refactor the second half of tls_process_client_hello() into a subroutine to be called at the post-processing stage (including the early callback itself), to allow the callback to result in remaining in the same work stage for a later call to succeed. This requires allocating for and storing the CLIENTHELLO_MSG in the SSL object to be preserved across such calls, but the storage is reclaimed after ClientHello processing finishes. Information about the CliehtHello is available to the callback by means of accessor functions that can only be used from the early callback. This allows extensions to make use of the existing internal parsing machinery without exposing structure internals (e.g., of PACKET), so that applications do not have to write fragile parsing code. Applications are encouraged to utilize an early callback and not use a servername_callback, in order to avoid unexpected behavior that occurs due to the relative order of processing between things like session resumption and the historical servername callback. Also tidy up nearby style by removing unnecessary braces around one-line conditional bodies. Reviewed-by:
Matt Caswell <matt@openssl.org> Reviewed-by:
Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2279)
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Benjamin Kaduk authored
Add the new enum value and case statements as appropriate. Reviewed-by:
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Benjamin Kaduk authored
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Benjamin Kaduk authored
Split off the portions that mutate the SSL object into a separate function that the state machine calls, so that the public API can be a pure function. (It still needs the SSL parameter in order to determine what SSL_METHOD's get_cipher_by_char() routine to use, though.) Instead of returning the stack of ciphers (functionality that was not used internally), require using the output parameter, and add a separate output parameter for the SCSVs contained in the supplied octets, if desired. This lets us move to the standard return value convention. Also make both output stacks optional parameters. Reviewed-by:
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Benjamin Kaduk authored
Move ssl_bytes_to_cipher_list() to ssl_lib.c and create a public wrapper around it. This lets application early callbacks easily get SSL_CIPHER objects from the raw ciphers bytes without having to reimplement the parsing code. In particular, they do not need to know the details of the sslv2 format ClientHello's ciphersuite specifications. Document the new public function, including the arguably buggy behavior of modifying the supplied SSL object. On the face of it, such a function should be able to be pure, just a direct translation of wire octets to internal data structures. Reviewed-by:
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Benjamin Kaduk authored
Now that we have made SCSVs into more of a first-class object, provide a way for the bytes-to-SSL_CIPHER conversion to actually return them. Add a flag 'all' to ssl_get_cipher_by_char to indicate that we want all the known ciphers, not just the ones valid for encryption. This will, in practice, let the caller retrieve the SCSVs. Reviewed-by:
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Benjamin Kaduk authored
Just as we have a table of ssl3_ciphers, add a table of ssl3_scsvs, to contain SSL_CIPHER objects for these non-valid ciphers. This will allow for unified handling of such indicators, especially as we are preparing to pass them around between functions. Since the 'valid' field is not set for the SCSVs, they should not be used for anything requiring a cryptographic cipher (as opposed to something being stuck in a cipher-shaped hole in the TLS wire protocol). Reviewed-by:
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Benjamin Kaduk authored
We'll be adding a field of this type to struct ssl_st in a subsequent commit, and need the type definition to be in scope already. Also move up the RAW_EXTENSION definition that it depends on. Reviewed-by:
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Benjamin Kaduk authored
Keep track of the length of the pre_proc_exts array. Reviewed-by:
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Benjamin Kaduk authored
Modify the API of tls_collect_extensions() to be able to output the number of extensions that are known (i.e., the length of its 'res' output). This number can never be zero on a successful return due to the builtin extensions list, but use a separate output variable so as to not overload the return value semantics. Having this value easily available will give consumers a way to avoid repeating the calculation. Reviewed-by:
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Richard Levitte authored
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Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2727)
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Richard Levitte authored
The library files are built with symbol names as is, while the application is built with the default uppercase-all-symbols mode. That's fine for public APIs, because we have __DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H automatically telling the compiler how to treat the public header files. However, we don't have the same setup for internal library APIs, since they are usually only used by the libraries. Because apps/rehash.c uses a library internal header file, we have to surround that inclusion with the same kind of pragmas found in __DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H, or we get unresolved symbols when building no-shared. Reviewed-by:
Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2725)
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Pauli authored
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Richard Levitte authored
The generation number is ';nnn' at the end of the file name fetched with readdir(). Because rehash checks for specific extensions and doesn't expect an additional generation number, the easiest is to massage the received file name early by simply removing the generation number. Reviewed-by:
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- 22 Feb, 2017 14 commits
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Richard Levitte authored
Also, don't exit with an error code Reviewed-by:
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Richard Levitte authored
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Bernd Edlinger authored
There has never been any gcc option of that kind. Reviewed-by:
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Richard Levitte authored
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Rich Salz authored
Prevent that memory beyond the last element is accessed if every element of group->poly[] is non-zero Reviewed-by:
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Richard Levitte authored
A spelling error prevented it from building correctly. Furthermore, we need to be more careful when to add a / at the end of the dirname and when not. Reviewed-by:
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Richard Levitte authored
opendir(), readdir() and closedir() have been available on VMS since version 7.0. Reviewed-by:
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Rob Percival authored
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Tim Hudson <tjh@openssl.org> Reviewed-by:
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Rob Percival authored
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Rob Percival authored
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Rob Percival authored
TODO(robpercival): Should actually test that the output certificate contains the poison extension. Reviewed-by:
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Rob Percival authored
This makes it a little easier to create a pre-certificate. Reviewed-by:
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Bernd Edlinger authored
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Richard Levitte authored
The condition wasn't quite right Reviewed-by:
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- 21 Feb, 2017 12 commits
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Bernd Edlinger authored
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Andy Polyakov authored
One of the reasons for why masm/ml64 is not [fully] supported is that it's problematic to support multiple versions. But latest one usually works and/or it's lesser problem to make it work. So idea here is to have a "whistle" when it breaks, so that problems can be evaluated as they emerge. It's kind of "best effort" thing, as opposite to "full support". Reviewed-by: -
Dmitry Belyavskiy authored
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Bernd Edlinger authored
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Bernd Edlinger authored
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Dmitry Belyavskiy authored
commands. Reviewed-by:
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Rich Salz authored
Change size comparison from > (GT) to >= (GTE) to ensure an additional byte of output buffer, to prevent OOB reads/writes later in the function Reject input strings larger than 2GB Detect invalid output buffer size and return early Reviewed-by:
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Kurt Roeckx authored
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Dr. Stephen Henson authored
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Dr. Stephen Henson authored
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Dr. Stephen Henson authored
Set default validity flags if signature algorithms extension is not present. Preserve flags when checking chains. Reviewed-by:
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Dr. Stephen Henson authored
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