Closes #2793

Let's call it disassociate instead of disconnect since the latter term
is used so much for (TCP) connections already.

Verifies bugfix #2797

The curl binary would crash if the -H command line option was given a
filename to read using the @filename syntax but that file was empty.

Closes #2797

Bug: https://curl.haxx.se/mail/archive-2018-07/0015.html
Reported-by: Jeffrey Walton
Closes #2795

Closes #2804

Closes #2794

The statement, “The application does not have to keep the string around
after setting this option,” appears to be indented under the RTMP
paragraph. It actually applies to all protocols, not just RTMP.
Eliminate the extra indentation.

Closes #2788

For compatibility with `fwrite`, the `CURLOPT_WRITEFUNCTION` callback is
passed two `size_t` parameters which, when multiplied, designate the
number of bytes of data passed in. In practice, CURL always sets the
first parameter (`size`) to 1.

This practice is also enshrined in documentation and cannot be changed
in future. The documentation states that the default callback is
`fwrite`, which means `fwrite` must be a suitable function for this
purpose. However, the documentation also states that the callback must
return the number of *bytes* it successfully handled, whereas ISO C
`fwrite` returns the number of items (each of size `size`) which it
wrote. The only way these numbers can be equal is if `size` is 1.

Since `size` is 1 and can never be changed in future anyway, document
that fact explicitly and let users rely on it.

Closes #2787

RNG structure must be freed by call to FreeRng after its use in
Curl_cyassl_random. This call fixes Valgrind failures when running the
test suite with wolfSSL.

Closes #2784

This fixes a memory leak when CURLOPT_LOGIN_OPTIONS is used, together with
connection reuse.

I found this with oss-fuzz on GDAL and curl master:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9582
I couldn't reproduce with the oss-fuzz original test case, but looking
at curl source code pointed to this well reproducable leak.

Closes #2790

In the current version, VERSION_GREATER_THAN_EQUAL 6.3 will return false
when run on windows 10.0. This patch addresses that error.

Closes https://github.com/curl/curl/pull/2792

So far, the code tries to pick an authentication method only if
user/password credentials are available, which is not the case for
Bearer authentictation...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Closes #2754

The Bearer authentication was added to cURL 7.61.0, but there is a
problem: if CURLAUTH_ANY is selected, and the server supports multiple
authentication methods including the Bearer method, we strongly prefer
that latter method (only CURLAUTH_NEGOTIATE beats it), and if the Bearer
authentication fails, we will never even try to attempt any other
method.

This is particularly unfortunate when we already know that we do not
have any Bearer token to work with.

Such a scenario happens e.g. when using Git to push to Visual Studio
Team Services (which supports Basic and Bearer authentication among
other methods) and specifying the Personal Access Token directly in the
URL (this aproach is frequently taken by automated builds).

Let's make sure that we have a Bearer token to work with before we
select the Bearer authentication among the available authentication
methods.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Closes #2754

Otherwise, LF line endings are converted to CRLF on Windows,
but no conversion is done for the reply, so the test case fails.

Closes https://github.com/curl/curl/pull/2776

Follow-up to 1b76c389. The VTLS backends that close down the TLS
layer for a connection still needs a Curl_easy handle for the session_id
cache etc.

Fixes #2764
Closes #2771

Set mode="text" when line endings depend on the system representation.

Closes https://github.com/curl/curl/pull/2772

By default, the MSYS2 bash converts all backslashes to forward slashes
in URLs. Disable this with MSYS2_ARG_CONV_EXCL for the test to pass.

Ref https://github.com/msys2/msys2/wiki/Porting#filesystem-namespaces

- separate easy handle from connections better
- added asserts on a number of places
- added sanity check of pipelines for debug builds

Closes #2751

... the protocol is doing read/write a lot, so it needs to write often
even when downloading. A more proper fix could check for eactly when it
wants to write and only ask for it then.

Without this fix, an SMB download could easily get stuck when the event-driven
API was used.

Closes #2768

By default, the MSYS2 bash interprets http:/%HOSTIP:%HTTPPORT/want/1143
as a POSIX file list and converts it to a Windows file list.
Disable this with MSYS2_ARG_CONV_EXCL for the test to pass.

Ref https://github.com/msys2/msys2/wiki/Porting#filesystem-namespaces
Closes https://github.com/curl/curl/pull/2765

... and work toward 7.61.1

Closes #2727
Reviewed-by: Sergei Nikulov

... the "unbold" sequence doesn't work on the mac Terminal.

Reported-by: Zero King
Fixes #2736
Closes #2738

curl configured with --enable-debug --disable-file currently complains
on test1422:
Info: Protocol "file" not supported or disabled in libcurl

Make test1422 dependend on enabled FILE protocol to fix this.

Fixes https://github.com/curl/curl/issues/2741
Closes https://github.com/curl/curl/pull/2742

Some servers issue raw deflate data that may be followed by an undocumented
trailer. This commit makes curl tolerate such a trailer of up to 4 bytes
before considering the data is in error.

Reported-by: clbr on github
Fixes #2719

Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9369
Closes #2740

The definition of CALG_TLS1PRF has been fixed in the 5.1 branch:
https://osdn.net/projects/mingw/scm/git/mingw-org-wsl/commits/73aedcc0f2e6ba370de0d86ab878ad76a0dda7b5

+ The hackerone bounty and its process

- We don't and can't handle pre-notification

It was previously erroneously skipped in some situations.

libtest/libntlmconnect.c wrongly depended on wrong behavior (that it
would get a zero timeout) when no handles are "running" in a multi
handle. That behavior is no longer present with this fix. Now libcurl
will always return a -1 timeout when all handles are completed.

Closes #2733

On multiplexed connections, transfers can be removed from anywhere not
just at the head as for pipelines.

... as the usage needs to be counted.

Commit 38203f15 changed engine detection to be version-based,
with a baseline of openssl 1.0.1. This does in fact break builds
with openssl 1.0.0, which has engine support - the configure script
detects that ENGINE_cleanup() is available - but <openssl/engine.h>
doesn't get included to declare it.

According to upstream documentation, engine support was added to
mainstream openssl builds as of version 0.9.7:
https://github.com/openssl/openssl/blob/master/README.ENGINE

This commit drops the version test down to 1.0.0 as version 1.0.0d
is the oldest version I have to test with.

Closes #2732

Original MinGW's w32api has a sytax error in its definition of
CALG_TLS1PRF [0]. Don't use original MinGW w32api's CALG_TLS1PRF
until this bug [1] is fixed.

[0] https://osdn.net/projects/mingw/scm/git/mingw-org-wsl/blobs/d1d4a17e51a2b78e252ef0147d483267d56c90cc/w32api/include/wincrypt.h
[1] https://osdn.net/projects/mingw/ticket/38391

Fixes https://github.com/curl/curl/pull/2721#issuecomment-403636043
Closes https://github.com/curl/curl/pull/2728

Apparently the C => HTML converter on the web site doesn't quite like it
otherwise.

Reported-by: Jeroen Ooms

Closes #2724

... and not the other way around, which this previously said.

Reported-by: Vasiliy Faronov
Fixes #2723
Closes #2726