When there's an upload in progress, make sure to wait for the socket to
become writable.

Detected-by: steini2000 on github
Bug: #2520
Closes #2567

Response data for a handle with a large buffer might be cached and then
used with the "closure" handle when it has a smaller buffer and then the
larger cache will be copied and overflow the new smaller heap based
buffer.

Reported-by: Dario Weisser
CVE: CVE-2018-1000300
Bug: https://curl.haxx.se/docs/adv_2018-82c2.html

... leaving the k->str could lead to buffer over-reads later on.

CVE: CVE-2018-1000301
Assisted-by: Max Dymond

Detected by OSS-Fuzz.
Bug: https://curl.haxx.se/docs/adv_2018-b138.html
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7105

RFC 6265 section 4.2.1 does not set restrictions on cookie names.
This is a follow-up to commit 7f7fcd0d.
Also explicitly check proper syntax of cookie name/value pair.

New test 1155 checks that cookie names are not reserved words.

Reported-By: anshnd at github
Fixes #2564
Closes #2566

Assisted-by: Max Dymond

Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8245

Detected by Coverity; CID 1435559.  Follow-up to f8d608f3. It would
index the array with -1 if neither index was a socket.

Closes #2558

To make builds with VS2015 work. Recent changes in VS2015 _IOB_ENTRIES
handling is causing problems. This fix changes the OpenSSL backend code
to use BIO functions instead of FILE I/O functions to circumvent those
problems.

Closes #2512

Assisted-by: Dan Fandrich

Closes #2528

This file wasn't included in commit 4af40b36 which updated all
haxx.se http urls to https. The file was committed prior to that update,
but may have been merged after it and hence didn't get updated.

Closes #2550

follow-up to e66cca04

... instead of previous separate struct fields, to make it easier to
extend and change individual backends without having to modify them all.

closes #2547

Curl_setup_transfer() can be called to setup a new individual transfer
over a multiplexed connection so it shouldn't unset writesockfd.

Bug: #2520
Closes #2549

They are removed from the compiler flags.

This ensures that make dependency tracking will force a rebuild whenever
configure --enable-debug or --enable-curldebug changes.

Closes #2548

It triggers an assert.

Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8144
Closes #2546

Closes #2531

When only building with SSL backends that don't use the CA bundle file
(by default), skip the check.

Fixes #2543
Fixes #2180
Closes #2545

ssh-libssh.c:2429:21: warning: result of '1 << 31' requires 33 bits to
represent, but 'int' only has 32 bits [-Wshift-overflow=]

'len' will never be that big anyway so I converted the run-time check to
a regular assert.

Commit 3c630f9b partially reverted the
changes from commit dd7521bc because of
the problem that strcpy_url() was modified unilaterally without also
modifying strlen_url(). As a consequence strcpy_url() was again
depending on ASCII encoding.

This change fixes strlen_url() and strcpy_url() in parallel to use a
common host-encoding independent criterion for deciding whether an URL
character must be %-escaped.

Closes #2535

Closes #2544

This reverts commit d5d683a9.

--disable-pthreads can be used to disable pthreads and get the threaded
resolver to use the windows threading when building with mingw.

... as it defines it (too)

Closes https://github.com/curl/curl/pull/2542

Feedback-by: Michael Kilburn

Closes #1411

Closes #1508

Closes #2051

Closes #1332

It seems to not be detected by default anymore (which is a bug I
believe)

Closes #2541

Closes #2299

Closes #2252

... and make test 1026 rely on that feature so that --disable-manual
builds don't cause test failures.

Reported-by: Max Dymond and Anders Roxell
Fixes #2533
Closes #2540