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2019-08-13nss: use TLSv1.3 as default if supportedPeter Wu
SSL_VersionRangeGetDefault returns (TLSv1.0, TLSv1.2) as supported range in NSS 3.45. It looks like the intention is to raise the minimum version rather than lowering the maximum, so adjust accordingly. Note that the caller (nss_setup_connect) initializes the version range to (TLSv1.0, TLSv1.3), so there is no need to check for >= TLSv1.0 again. Closes #4187 Reviewed-by: Daniel Stenberg Reviewed-by: Kamil Dudka
2019-07-17nss: inspect returnvalue of token checkDaniel Gustafsson
PK11_IsPresent() checks for the token for the given slot is available, and sets needlogin flags for the PK11_Authenticate() call. Should it return false, we should however treat it as an error and bail out. Closes https://github.com/curl/curl/pull/4110
2019-07-06nss: support using libnss on macOSDaniel Gustafsson
The file suffix for dynamically loadable objects on macOS is .dylib, which need to be added for the module definitions in order to get the NSS TLS backend to work properly on macOS. Closes https://github.com/curl/curl/pull/4046
2019-07-06nss: don't set unused parameterDaniel Gustafsson
The value of the maxPTDs parameter to PR_Init() has since at least NSPR 2.1, which was released sometime in 1998, been marked ignored as is accordingly not used in the initialization code. Setting it to a value when calling PR_Init() is thus benign, but indicates an intent which may be misleading. Reset the value to zero to improve clarity. Closes https://github.com/curl/curl/pull/4054
2019-07-06nss: only cache valid CRL entriesDaniel Gustafsson
Change the logic around such that we only keep CRLs that NSS actually ended up caching around for later deletion. If CERT_CacheCRL() fails then there is little point in delaying the freeing of the CRL as it is not used. Closes https://github.com/curl/curl/pull/4053
2019-05-27nss: allow to specify TLS 1.3 ciphers if supported by NSSHubert Kario
Closes #3916
2019-05-16cleanup: remove FIXME and TODO commentsDaniel Stenberg
They serve very little purpose and mostly just add noise. Most of them have been around for a very long time. I read them all before removing or rephrasing them. Ref: #3876 Closes #3883
2019-05-07nss: allow fifos and character devices for certificates.Frank Gevaerts
Currently you can do things like --cert <(cat ./cert.crt) with (at least) the openssl backend, but that doesn't work for nss because is_file rejects fifos. I don't actually know if this is sufficient, nss might do things internally (like seeking back) that make this not work, so actual testing is needed. Closes #3807
2019-05-01multi: provide Curl_multiuse_state to update informationDaniel Stenberg
As soon as a TLS backend gets ALPN conformation about the specific HTTP version it can now set the multiplex situation for the "bundle" and trigger moving potentially queued up transfers to the CONNECT state.
2019-04-29nss: provide more specific error messages on failed initKamil Dudka
Closes #3808
2018-12-05nss: Fix compatibility with nss versions 3.14 to 3.15Paul Howarth
2018-12-05nss: Improve info message when falling back SSL protocolPaul Howarth
Use descriptive text strings rather than decimal numbers.
2018-12-05nss: Fall back to latest supported SSL versionPaul Howarth
NSS may be built without support for the latest SSL/TLS versions, leading to "SSL version range is not valid" errors when the library code supports a recent version (e.g. TLS v1.3) but it has explicitly been disabled. This change adjusts the maximum SSL version requested by libcurl to be the maximum supported version at runtime, as long as that version is at least as high as the minimum version required by libcurl. Fixes #3261
2018-11-23snprintf: renamed and we now only use msnprintf()Daniel Stenberg
The function does not return the same value as snprintf() normally does, so readers may be mislead into thinking the code works differently than it actually does. A different function name makes this easier to detect. Reported-by: Tomas Hoger Assisted-by: Daniel Gustafsson Fixes #3296 Closes #3297
2018-11-20ssl: replace all internal uses of CURLE_SSL_CACERTHan Han
Closes #3291
2018-11-13nss: remove version selecting dead codeKamil Dudka
Closes #3262
2018-11-13nss: set default max-tls to 1.3/1.2Daniel Stenberg
Fixes #3261
2018-11-12nss: fix fallthrough comment to fix picky compiler warningDaniel Stenberg
2018-10-03nss: fix nssckbi module loading on WindowsJay Satiro
- Use .DLL extension instead of .so to load modules on Windows. Bug: https://curl.haxx.se/mail/lib-2018-09/0077.html Reported-by: Maxime Legros Ref: https://github.com/curl/curl/pull/3016/#issuecomment-423069442 Closes https://github.com/curl/curl/pull/3086
2018-09-20vtls: fix ssl version "or later" behavior change for many backendsJay Satiro
- Treat CURL_SSLVERSION_MAX_NONE the same as CURL_SSLVERSION_MAX_DEFAULT. Prior to this change NONE would mean use the minimum version also as the maximum. This is a follow-up to 6015cef which changed the behavior of setting the SSL version so that the requested version would only be the minimum and not the maximum. It appears it was (mostly) implemented in OpenSSL but not other backends. In other words CURL_SSLVERSION_TLSv1_0 used to mean use just TLS v1.0 and now it means use TLS v1.0 *or later*. - Fix CURL_SSLVERSION_MAX_DEFAULT for OpenSSL. Prior to this change CURL_SSLVERSION_MAX_DEFAULT with OpenSSL was erroneously treated as always TLS 1.3, and would cause an error if OpenSSL was built without TLS 1.3 support. Co-authored-by: Daniel Gustafsson Fixes https://github.com/curl/curl/issues/2969 Closes https://github.com/curl/curl/pull/3012
2018-09-19nss: try to connect even if libnssckbi.so fails to loadKamil Dudka
One can still use CA certificates stored in NSS database. Reported-by: Maxime Legros Bug: https://curl.haxx.se/mail/lib-2018-09/0077.html Closes #3016
2018-09-06ssl: deprecate CURLE_SSL_CACERT in favour of a unified error codeHan Han
Long live CURLE_PEER_FAILED_VERIFICATION
2018-05-21checksrc: make sure sizeof() is used *with* parenthesesDaniel Stenberg
... and unify the source code to adhere. Closes #2563
2018-05-04vtls: use unified "supports" bitfield member in backendsDaniel Stenberg
... instead of previous separate struct fields, to make it easier to extend and change individual backends without having to modify them all. closes #2547
2018-04-06tls: fix mbedTLS 2.7.0 build + handle sha256 failuresWyatt O'Day
(mbedtls 2.70 compiled with MBEDTLS_DEPRECATED_REMOVED) Closes #2453
2018-02-15nss: use PK11_CreateManagedGenericObject() if availableKamil Dudka
... so that the memory allocated by applications using libcurl does not grow per each TLS connection. Bug: https://bugzilla.redhat.com/1510247 Closes #2297
2017-10-19vtls: change struct Curl_ssl `close' field name to `close_one'.Patrick Monnerat
On OS/400, `close' is an ASCII system macro that corrupts the code if not used in a context not targetting the close() system API.
2017-09-11code style: use spaces around equals signsDaniel Stenberg
2017-08-28vtls: refactor out essential information about the SSL backendsJohannes Schindelin
There is information about the compiled-in SSL backends that is really no concern of any code other than the SSL backend itself, such as which function (if any) implements SHA-256 summing. And there is information that is really interesting to the user, such as the name, or the curl_sslbackend value. Let's factor out the latter into a publicly visible struct. This information will be used in the upcoming API to set the SSL backend globally. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: allow selecting which SSL backend to use at runtimeJohannes Schindelin
When building software for the masses, it is sometimes not possible to decide for all users which SSL backend is appropriate. Git for Windows, for example, uses cURL to perform clones, fetches and pushes via HTTPS, and some users strongly prefer OpenSSL, while other users really need to use Secure Channel because it offers enterprise-ready tools to manage credentials via Windows' Credential Store. The current Git for Windows versions use the ugly work-around of building libcurl once with OpenSSL support and once with Secure Channel support, and switching out the binaries in the installer depending on the user's choice. Needless to say, this is a super ugly workaround that actually only works in some cases: Git for Windows also comes in a portable form, and in a form intended for third-party applications requiring Git functionality, in which cases this "swap out libcurl-4.dll" simply is not an option. Therefore, the Git for Windows project has a vested interest in teaching cURL to make the SSL backend a *runtime* option. This patch makes that possible. By running ./configure with multiple --with-<backend> options, cURL will be built with multiple backends. For the moment, the backend can be configured using the environment variable CURL_SSL_BACKEND (valid values are e.g. "openssl" and "schannel"). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: fold the backend ID into the Curl_ssl structureJohannes Schindelin
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: encapsulate SSL backend-specific dataJohannes Schindelin
So far, all of the SSL backends' private data has been declared as part of the ssl_connect_data struct, in one big #if .. #elif .. #endif block. This can only work as long as the SSL backend is a compile-time option, something we want to change in the next commits. Therefore, let's encapsulate the exact data needed by each SSL backend into a private struct, and let's avoid bleeding any SSL backend-specific information into urldata.h. This is also necessary to allow multiple SSL backends to be compiled in at the same time, as e.g. OpenSSL's and CyaSSL's headers cannot be included in the same .c file. To avoid too many malloc() calls, we simply append the private structs to the connectdata struct in allocate_conn(). This requires us to take extra care of alignment issues: struct fields often need to be aligned on certain boundaries e.g. 32-bit values need to be stored at addresses that divide evenly by 4 (= 32 bit / 8 bit-per-byte). We do that by assuming that no SSL backend's private data contains any fields that need to be aligned on boundaries larger than `long long` (typically 64-bit) would need. Under this assumption, we simply add a dummy field of type `long long` to the `struct connectdata` struct. This field will never be accessed but acts as a placeholder for the four instances of ssl_backend_data instead. the size of each ssl_backend_data struct is stored in the SSL backend-specific metadata, to allow allocate_conn() to know how much extra space to allocate, and how to initialize the ssl[sockindex]->backend and proxy_ssl[sockindex]->backend pointers. This would appear to be a little complicated at first, but is really necessary to encapsulate the private data of each SSL backend correctly. And we need to encapsulate thusly if we ever want to allow selecting CyaSSL and OpenSSL at runtime, as their headers cannot be included within the same .c file (there are just too many conflicting definitions and declarations for that). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: prepare the SSL backends for encapsulated private dataJohannes Schindelin
At the moment, cURL's SSL backend needs to be configured at build time. As such, it is totally okay for them to hard-code their backend-specific data in the ssl_connect_data struct. In preparation for making the SSL backend a runtime option, let's make the access of said private data a bit more abstract so that it can be adjusted later in an easy manner. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28getinfo: access SSL internals via Curl_sslJohannes Schindelin
In the ongoing endeavor to abstract out all SSL backend-specific functionality, this is the next step: Instead of hard-coding how the different SSL backends access their internal data in getinfo.c, let's implement backend-specific functions to do that task. This will also allow for switching SSL backends as a runtime option. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: remove obsolete declarations of SSL backend functionalityJohannes Schindelin
These functions are all available via the Curl_ssl struct now, no need to declare them separately anymore. As the global declarations are removed, the corresponding function definitions are marked as file-local. The only two exceptions here are Curl_mbedtls_shutdown() and Curl_polarssl_shutdown(): only the declarations were removed, there are no function definitions to mark file-local. Please note that Curl_nss_force_init() is *still* declared globally, as the only SSL backend-specific function, because it was introduced specifically for the use case where cURL was compiled with `--without-ssl --with-nss`. For details, see f3b77e561 (http_ntlm: add support for NSS, 2010-06-27). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: move the SUPPORT_HTTPS_PROXY flag into the Curl_ssl structJohannes Schindelin
That will allow us to choose the SSL backend at runtime. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: convert the have_curlssl_* constants to runtime flagsJohannes Schindelin
The entire idea of introducing the Curl_ssl struct to describe SSL backends is to prepare for choosing the SSL backend at runtime. To that end, convert all the #ifdef have_curlssl_* style conditionals to use bit flags instead. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: move sha256sum into the Curl_ssl structJohannes Schindelin
The SHA-256 checksumming is also an SSL backend-specific function. Let's include it in the struct declaring the functionality of SSL backends. In contrast to MD5, there is no fall-back code. To indicate this, the respective entries are NULL for those backends that offer no support for SHA-256 checksumming. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: move md5sum into the Curl_ssl structJohannes Schindelin
The MD5 summing is also an SSL backend-specific function. So let's include it, offering the previous fall-back code as a separate function now: Curl_none_md5sum(). To allow for that, the signature had to be changed so that an error could be returned from the implementation (Curl_none_md5sum() can run out of memory). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: use the Curl_ssl struct to access all SSL backends' functionalityJohannes Schindelin
This is the first step to unify the SSL backend handling. Now all the SSL backend-specific functionality is accessed via a global instance of the Curl_ssl struct. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: declare Curl_ssl structs for every SSL backendJohannes Schindelin
The idea of introducing the Curl_ssl struct was to unify how the SSL backends are declared and called. To this end, we now provide an instance of the Curl_ssl struct for each and every SSL backend. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-07-20nss: fix a possible use-after-free in SelectClientCert()Kamil Dudka
... causing a SIGSEGV in showit() in case the handle used to initiate the connection has already been freed. This commit fixes a bug introduced in curl-7_19_5-204-g5f0cae803. Reported-by: Rob Sanders Bug: https://bugzilla.redhat.com/1436158
2017-07-20nss: unify the coding style of nss_send() and nss_recv()Kamil Dudka
No changes in behavior intended by this commit.
2017-06-16HTTPS-Proxy: don't offer h2 for https proxy connectionsJay Satiro
Bug: https://github.com/curl/curl/issues/1254 Closes #1546
2017-04-25nss: load libnssckbi.so if no other trust is specifiedKamil Dudka
The module contains a more comprehensive set of trust information than supported by nss-pem, because libnssckbi.so also includes information about distrusted certificates. Reviewed-by: Kai Engert Closes #1414
2017-04-25nss: factorize out nss_{un,}load_module to separate fncsKamil Dudka
No change of behavior is intended by this commit.
2017-04-25nss: do not leak PKCS #11 slot while loading a keyKamil Dudka
It could prevent nss-pem from being unloaded later on. Bug: https://bugzilla.redhat.com/1444860
2017-04-24nss: adapt to the new Curl_llist APIKamil Dudka
This commit fixes compilation failure caused by cbae73e1dd95946597ea74ccb580c30f78e3fa73.
2017-04-18nss: fix MinGW compiler warningsMarcel Raad
This fixes 3 warnings issued by MinGW: 1. PR_ImportTCPSocket actually has a paramter of type PROsfd instead of PRInt32, which is 64 bits on Windows. Fixed this by including the corresponding header file instead of redeclaring the function, which is supported even though it is in the private include folder. [1] 2. In 64-bit mode, size_t is 64 bits while CK_ULONG is 32 bits, so an explicit narrowing cast is needed. 3. Curl_timeleft returns time_t instead of long since commit 21aa32d30dbf319f2d336e0cb68d3a3235869fbb. [1] https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSPR/Reference/PR_ImportTCPSocket Closes https://github.com/curl/curl/pull/1393
2017-04-18TLS: Fix switching off SSL session id when client cert is usedJay Satiro
Move the sessionid flag to ssl_primary_config so that ssl and proxy_ssl will each have their own sessionid flag. Regression since HTTPS-Proxy support was added in cb4e2be. Prior to that this issue had been fixed in 247d890, CVE-2016-5419. Bug: https://github.com/curl/curl/issues/1341 Reported-by: lijian996@users.noreply.github.com The new incarnation of this bug is called CVE-2017-7468 and is documented here: https://curl.haxx.se/docs/adv_20170419.html
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