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2020-06-06openssl: set FLAG_TRUSTED_FIRST unconditionallyFrançois Rigault
On some systems, openssl 1.0.x is still the default, but it has been patched to contain all the recent security fixes. As a result of this patching, it is possible for macro X509_V_FLAG_NO_ALT_CHAINS to be defined, while the previous behavior of openssl to not look at trusted chains first, remains. Fix it: ensure X509_V_FLAG_TRUSTED_FIRST is always set, do not try to probe for the behavior of openssl based on the existence ofmacros. Closes #5530
2020-06-01vtls: repair the build with `CURL_DISABLE_PROXY`Saleem Abdulrasool
`http_proxy` will not be available in `conndata` if `CURL_DISABLE_PROXY` is enabled. Repair the build with that configuration. Follow-up to f3d501dc67 Closes #5498
2020-05-30build: disable more code/data when built without proxy supportDaniel Stenberg
Added build to travis to verify Closes #5466
2020-05-30timeouts: change millisecond timeouts to timediff_t from time_tDaniel Stenberg
For millisecond timers we like timediff_t better. Also, time_t can be unsigned so returning a negative value doesn't work then. Closes #5479
2020-05-27wolfssl: add SSLKEYLOGFILE supportPeter Wu
Tested following the same curl and tshark commands as in commit "vtls: Extract and simplify key log file handling from OpenSSL" using WolfSSL v4.4.0-stable-128-g5179503e8 from git master built with `./configure --enable-all --enable-debug CFLAGS=-DHAVE_SECRET_CALLBACK`. Full support for this feature requires certain wolfSSL build options, see "Availability note" in lib/vtls/wolfssl.c for details. Closes #5327
2020-05-27vtls: Extract and simplify key log file handling from OpenSSLPeter Wu
Create a set of routines for TLS key log file handling to enable reuse with other TLS backends. Simplify the OpenSSL backend as follows: - Drop the ENABLE_SSLKEYLOGFILE macro as it is unconditionally enabled. - Do not perform dynamic memory allocation when preparing a log entry. Unless the TLS specifications change we can suffice with a reasonable fixed-size buffer. - Simplify state tracking when SSL_CTX_set_keylog_callback is unavailable. My original sslkeylog.c code included this tracking in order to handle multiple calls to SSL_connect and detect new keys after renegotiation (via SSL_read/SSL_write). For curl however we can be sure that a single master secret eventually becomes available after SSL_connect, so a simple flag is sufficient. An alternative to the flag is examining SSL_state(), but this seems more complex and is not pursued. Capturing keys after server renegotiation was already unsupported in curl and remains unsupported. Tested with curl built against OpenSSL 0.9.8zh, 1.0.2u, and 1.1.1f (`SSLKEYLOGFILE=keys.txt curl -vkso /dev/null https://localhost:4433`) against an OpenSSL 1.1.1f server configured with: # Force non-TLSv1.3, use TLSv1.0 since 0.9.8 fails with 1.1 or 1.2 openssl s_server -www -tls1 # Likewise, but fail the server handshake. openssl s_server -www -tls1 -Verify 2 # TLS 1.3 test. No need to test the failing server handshake. openssl s_server -www -tls1_3 Verify that all secrets (1 for TLS 1.0, 4 for TLS 1.3) are correctly written using Wireshark. For the first and third case, expect four matches per connection (decrypted Server Finished, Client Finished, HTTP Request, HTTP Response). For the second case where the handshake fails, expect a decrypted Server Finished only. tshark -i lo -pf tcp -otls.keylog_file:keys.txt -Tfields \ -eframe.number -eframe.time -etcp.stream -e_ws.col.Info \ -dtls.port==4433,http -ohttp.desegment_body:FALSE \ -Y 'tls.handshake.verify_data or http' A single connection can easily be identified via the `tcp.stream` field.
2020-05-26cleanup: use a single space after equals sign in assignmentsDaniel Stenberg
2020-05-25all: fix codespell errorsViktor Szakats
Reviewed-by: Jay Satiro Reviewed-by: Daniel Stenberg Closes https://github.com/curl/curl/pull/5452
2020-05-15setopt: support certificate options in memory with struct curl_blobGilles Vollant
This change introduces a generic way to provide binary data in setopt options, called BLOBs. This change introduces these new setopts: CURLOPT_ISSUERCERT_BLOB, CURLOPT_PROXY_SSLCERT_BLOB, CURLOPT_PROXY_SSLKEY_BLOB, CURLOPT_SSLCERT_BLOB and CURLOPT_SSLKEY_BLOB. Reviewed-by: Daniel Stenberg Closes #5357
2020-05-15source cleanup: remove all custom typedef structsDaniel Stenberg
- Stick to a single unified way to use structs - Make checksrc complain on 'typedef struct {' - Allow them in tests, public headers and examples - Let MD4_CTX, MD5_CTX, and SHA256_CTX typedefs remain as they actually typedef different types/structs depending on build conditions. Closes #5338
2020-05-14curl_multibyte: add to curlxMarcel Raad
This will also be needed in the tool and tests. Ref: https://github.com/curl/curl/pull/3758#issuecomment-482197512 Closes https://github.com/curl/curl/pull/3784
2020-05-14checksrc: enhance the ASTERISKSPACE and update code accordinglyDaniel Stenberg
Fine: "struct hello *world" Not fine: "struct hello* world" (and variations) Closes #5386
2020-05-13OpenSSL: have CURLOPT_CRLFILE imply CURLSSLOPT_NO_PARTIALCHAINDaniel Stenberg
... to avoid an OpenSSL bug that otherwise makes the CRL check to fail. Reported-by: Michael Kaufmann Fixes #5374 Closes #5376
2020-05-08CURLOPT_SSL_OPTIONS: add *_NATIVE_CA to use Windows CA store (with openssl)Gilles Vollant
Closes #4346
2020-04-30GnuTLS: Backend support for CURLINFO_SSL_VERIFYRESULTEmil Engler
Closes #5287
2020-04-29schannel: source code reindentDaniel Stenberg
White space edits only. Conform better to standard curl source code indenting style. Closes #5305
2020-04-27nss: check for PK11_CreateDigestContext() returning NULLDaniel Stenberg
... to avoid crashes! Reported-by: Hao Wu Fixes #5302 Closes #5303
2020-04-23select: make Curl_socket_check take timediff_t timeoutDaniel Stenberg
Coverity found CID 1461718: Integer handling issues (CONSTANT_EXPRESSION_RESULT) "timeout_ms > 9223372036854775807L" is always false regardless of the values of its operands. This occurs as the logical second operand of "||". Closes #5240
2020-04-21GnuTLS: Don't skip really long certificate fieldsEmil Engler
Closes #5271
2020-04-21gnutls: bump lowest supported version to 3.1.10Daniel Stenberg
GnuTLS 3.1.10 added new functions we want to use. That version was released on Mar 22, 2013. Removing support for older versions also greatly simplifies the code. Ref: #5271 Closes #5276
2020-04-20lib: fix typos in comments and errormessagesDaniel Gustafsson
This fixes a few randomly spotted typos in recently merged code, most notably one in a userfacing errormessage the schannel code.
2020-04-20multi-ssl: reset the SSL backend on `Curl_global_cleanup()`Johannes Schindelin
When cURL is compiled with support for multiple SSL backends, it is possible to configure an SSL backend via `curl_global_sslset()`, but only *before* `curl_global_init()` was called. If another SSL backend should be used after that, a user might be tempted to call `curl_global_cleanup()` to start over. However, we did not foresee that use case and forgot to reset the SSL backend in that cleanup. Let's allow that use case. Fixes #5255 Closes #5257 Reported-by: davidedec on github Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2020-04-12schannel: Fix blocking timeout logicAndrew Kurushin
- Fix schannel_send for the case when no timeout was set. Prior to this change schannel would error if the socket was not ready to send data and no timeout was set. This commit is similar to parent commit 89dc6e0 which recently made the same change for SOCKS, for the same reason. Basically it was not well understood that when Curl_timeleft returns 0 it is not a timeout of 0 ms but actually means no timeout. Fixes https://github.com/curl/curl/issues/5177 Closes https://github.com/curl/curl/pull/5221
2020-04-13gnutls: ensure TLS 1.3 when SRP isn't requestedDirkjan Bussink
When SRP is requested in the priority string, GnuTLS will disable support for TLS 1.3. Before this change, curl would always add +SRP to the priority list, effectively always disabling TLS 1.3 support. With this change, +SRP is only added to the priority list when SRP authentication is also requested. This also allows updating the error handling here to not have to retry without SRP. This is because SRP is only added when requested and in that case a retry is not needed. Closes #5223
2020-04-11lib: fix conversion warnings for SOCKET_WRITABLE/READABLEJay Satiro
- If loss of data may occur converting a timediff_t to time_t and the time value is > TIME_T_MAX then treat it as TIME_T_MAX. This is a follow-up to 8843678 which removed the (time_t) typecast from the macros so that conversion warnings could be identified. Closes https://github.com/curl/curl/pull/5199
2020-04-08schannel: support .P12 or .PFX client certificatesGilles Vollant
Used with curl command line option like this: --cert <filename>:<password> --cert-type p12 Closes #5193
2020-03-30cleanup: insert newline after if() conditionsDaniel Stenberg
Our code style mandates we put the conditional block on a separate line. These mistakes are now detected by the updated checksrc.
2020-03-26openssl: adapt to functions marked as deprecated since version 3Daniel Stenberg
OpenSSL 3 deprecates SSL_CTX_load_verify_locations and the MD4, DES functions we use. Fix the MD4 and SSL_CTX_load_verify_locations warnings. In configure, detect OpenSSL v3 and if so, inhibit the deprecation warnings. OpenSSL v3 deprecates the DES functions we use for NTLM and until we rewrite the code to use non-deprecated functions we better ignore these warnings as they don't help us. Closes #5139
2020-03-19secure transport: remove the BACKEND define kludgeDaniel Stenberg
Closes #5122
2020-03-19mbedtls: remove the BACKEND define kludgeDaniel Stenberg
2020-03-19bearssl: remove the BACKEND define kludgeDaniel Stenberg
2020-03-19wolfssl: remove the BACKEND define kludgeDaniel Stenberg
2020-03-19nss: remove the BACKEND define kludgeDaniel Stenberg
2020-03-19gnutls: remove the BACKEND define kludgeDaniel Stenberg
2020-03-19openssl: remove the BACKEND define kludgeDaniel Stenberg
Use a proper variable instead to make it easier to use a debugger and read the code.
2020-03-18schannel: add "best effort" revocation check optionJohannes Schindelin
- Implement new option CURLSSLOPT_REVOKE_BEST_EFFORT and --ssl-revoke-best-effort to allow a "best effort" revocation check. A best effort revocation check ignores errors that the revocation check was unable to take place. The reasoning is described in detail below and discussed further in the PR. --- When running e.g. with Fiddler, the schannel backend fails with an unhelpful error message: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate. Sadly, many enterprise users who are stuck behind MITM proxies suffer the very same problem. This has been discussed in plenty of issues: https://github.com/curl/curl/issues/3727, https://github.com/curl/curl/issues/264, for example. In the latter, a Microsoft Edge developer even made the case that the common behavior is to ignore issues when a certificate has no recorded distribution point for revocation lists, or when the server is offline. This is also known as "best effort" strategy and addresses the Fiddler issue. Unfortunately, this strategy was not chosen as the default for schannel (and is therefore a backend-specific behavior: OpenSSL seems to happily ignore the offline servers and missing distribution points). To maintain backward-compatibility, we therefore add a new flag (`CURLSSLOPT_REVOKE_BEST_EFFORT`) and a new option (`--ssl-revoke-best-effort`) to select the new behavior. Due to the many related issues Git for Windows and GitHub Desktop, the plan is to make this behavior the default in these software packages. The test 2070 was added to verify this behavior, adapted from 310. Based-on-work-by: georgeok <giorgos.n.oikonomou@gmail.com> Co-authored-by: Markus Olsson <j.markus.olsson@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Closes https://github.com/curl/curl/pull/4981
2020-03-17windows: suppress UI in all CryptAcquireContext() callsViktor Szakats
Ref: https://docs.microsoft.com/windows/win32/api/wincrypt/nf-wincrypt-cryptacquirecontexta#parameters Reviewed-by: Marc Hörsken Closes https://github.com/curl/curl/pull/5088
2020-03-16vtls: free ssl_config leftovers on out-of-memoryDaniel Stenberg
Torture testing 2034 and 2037 found this. Reported-by: Marc Hörsken Fixes #5108 Closes #5109
2020-03-15gskit: update the copyright year rangeDaniel Stenberg
Follow-up from 083603c63a3
2020-03-15gskit: use our internal select wrapper for portabilityMarc Hoersken
Follow up to c52b342 Closes #5106
2020-03-07version: make curl_version* thread-safe without using global contextDaniel Stenberg
Closes #5010
2020-03-05polarssl: remove more references and mentionsDaniel Stenberg
Assisted-by: Jay Satiro Follow-up to 6357a19ff29dac04 Closes #5036
2020-02-27gtls: Fixed compilation when using GnuTLS < 3.5.0Steve Holme
Reverts the functionality from 41fcb4f when compiling with GnuTLS older than 3.5.0. Reviewed-by: Daniel Stenberg Closes #4984
2020-02-21gtls: fix the copyright yearDaniel Stenberg
Follow-up from 41fcb4f609
2020-02-21GnuTLS: Always send client certjethrogb
TLS servers may request a certificate from the client. This request includes a list of 0 or more acceptable issuer DNs. The client may use this list to determine which certificate to send. GnuTLS's default behavior is to not send a client certificate if there is no match. However, OpenSSL's default behavior is to send the configured certificate. The `GNUTLS_FORCE_CLIENT_CERT` flag mimics OpenSSL behavior. Authored-by: jethrogb on github Fixes #1411 Closes #4958
2020-02-03openssl: remove redundant assignmentMarcel Raad
Fixes a scan-build failure on Bionic. Closes https://github.com/curl/curl/pull/4872
2020-02-02cleanup: fix typos and wording in docs and commentsPedro Monreal
Closes #4869 Reviewed-by: Emil Engler and Daniel Gustafsson
2020-01-23openssl: make CURLINFO_CERTINFO not truncate x509v3 fieldsDaniel Stenberg
Avoid "reparsing" the content and instead deliver more exactly what is provided in the certificate and avoid truncating the data after 512 bytes as done previously. This no longer removes embedded newlines. Fixes #4837 Reported-by: bnfp on github Closes #4841
2020-01-16wolfssl: use the wc-prefixed symbol alternativesDaniel Stenberg
The symbols without wc_ prefix are not always provided. Ref: https://github.com/wolfSSL/wolfssl/issues/2744 Closes #4827
2020-01-16polarssl: removedDaniel Stenberg
As detailed in DEPRECATE.md, the polarssl support is now removed after having been disabled for 6 months and nobody has missed it. The threadlock files used by mbedtls are renamed to an 'mbedtls' prefix instead of the former 'polarssl' and the common functions that previously were shared between mbedtls and polarssl and contained the name 'polarssl' have now all been renamed to instead say 'mbedtls'. Closes #4825
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