If just a `?' to indicate the query is passed always store a zero length
query instead of having a NULL query.

This permits to distinguish URL with trailing `?'.

Fixes #3369
Closes #3370

Curl_slist_append_nodup() returns NULL when it fails to create a new
item for the specified list, and since the coding here reassigned the
new list on top of the old list it would result in a dangling pointer
and lost memory. Also, in case we hit an allocation failure at some
point during the conversion, with allocation succeeding again on the
subsequent call(s) we will return a truncated list around the malloc
failure point. Fix by assigning to a temporary list pointer, which can
be checked (which is the common pattern for slist appending), and free
all the resources on allocation failure.

Closes #3372
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Only allow secure origins to be able to write cookies with the
'secure' flag set. This reduces the risk of non-secure origins
to influence the state of secure origins. This implements IETF
Internet-Draft draft-ietf-httpbis-cookie-alone-01 which updates
RFC6265.

Closes #2956
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Reported-by: Tobias Lindgren
Pointed out in #3367

Closes #3368

A URL with a single colon without a portnumber should use the default
port, discarding the colon. Fix, add a testcase and also do little bit
of comment wordsmithing.

Closes #3365
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

... when not actually following the redirect. Otherwise we return error
for this and an application can't extract the value.

Test 1518 added to verify.

Reported-by: Pavel Pavlov
Fixes #3340
Closes #3364

The time_t type is unsigned on some systems and these variables are used
to hold return values from functions that return timediff_t
already. timediff_t is always a signed type.

Closes #3363

Suggested-by: Dave Reisner

Prior to 7.56.0, fieldnames and filenames were set in Content-Disposition
header without special processing: this may lead to invalid RFC 822
quoted-strings.
7.56.0 introduces escaping of backslashes and double quotes in these names:
mention it in the documentation.

Reported-by: daboul on github
Closes #3361

... where "last release" should be the git tag in the repo.

This adds a new unittest intended to cover the internal functions in
the urlapi code, starting with parse_port(). In order to avoid name
collisions in debug builds, parse_port() is renamed Curl_parse_port()
since it will be exported.

Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>

An IPv6 URL which contains a zone index includes a '%%25<zode id>'
string before the ending ']' bracket. The parsing logic wasn't set
up to cope with the zone index however, resulting in a malformed url
error being returned. Fix by breaking the parsing into two stages
to correctly handle the zone index.

Closes #3355
Closes #3319
Reported-by: tonystz on Github
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>

- Include query in the path passed to generate HTTP auth.

Recent changes to use the URL API internally (46e16406, 7.62.0)
inadvertently broke authentication URIs by omitting the query.

Fixes https://github.com/curl/curl/issues/3353
Closes #3356

The http status code 204 (No Content) should not change the "condition
unmet" flag. Only the http status code 304 (Not Modified) should do
this.

Closes #359

- Match URL scheme with LDAP and LDAPS
- Retrieve attributes, scope and filter from URL query instead

Regression brought in 46e16406 (7.62.0)

Closes #3362

All resources defined in lib/libcurl.rc and curl.rc are language
neutral.

winbuild/MakefileBuild.vc ALWAYS defines the macro DEBUGBUILD, so the
ifdef's in line 33 of lib/libcurl.rc and src/curl.rc are wrong.

Replace the hard-coded constants in both *.rc files with #define'd
values.

Thumbs-uped-by: Rod Widdowson, Johannes Schindelin
URL: https://curl.haxx.se/mail/lib-2018-11/0000.html
Closes #3348

Reported-by: Jeroen Ooms
Fixes #3351
Closes #3352

This is a companion patch to cbea2fd2

 (NTLM: force the connection to
HTTP/1.1, 2018-12-06): with NTLM, we can switch to HTTP/1.1
preemptively. However, with other (Negotiate) authentication it is not
clear to this developer whether there is a way to make it work with
HTTP/2, so let's try HTTP/2 first and fall back in case we encounter the
error HTTP_1_1_REQUIRED.

Note: we will still keep the NTLM workaround, as it avoids an extra
round trip.

Daniel Stenberg helped a lot with this patch, in particular by
suggesting to introduce the Curl_h2_http_1_1_error() function.

Closes #3349

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

URL: https://curl.haxx.se/mail/lib-2018-11/0055.html

Closes #3347

Since v7.62.0, cURL tries to use HTTP/2 whenever the server announces
the capability. However, NTLM authentication only works with HTTP/1.1,
and will likely remain in that boat (for details, see
https://docs.microsoft.com/en-us/iis/get-started/whats-new-in-iis-10/http2-on-iis#when-is-http2-not-supported).

When we just found out that we want to use NTLM, and when the current
connection runs in HTTP/2 mode, let's force the connection to be closed
and to be re-opened using HTTP/1.1.

Fixes https://github.com/curl/curl/issues/3341

.
Closes #3345

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

It is allowed to call that function with id set to -1, specifying the
backend by the name instead. We should imitate what is done further down
in that function to allow for that.

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

Closes #3346

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

Reviewed-by: Daniel Gustafsson
Closes #3342

Reported-by: dtmsecurity at github
Fixes #3325
Closes #3336

This subdir has mostly become an attic of never-used cruft from the
past.

Closes #3331

Moves the file handling BIO calls to the branch of the code where they
are actually used.

Closes #3339

Use descriptive text strings rather than decimal numbers.

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

The extended warning for checking incorrect COPYRIGHTYEAR is quite
expensive to run, so rather than expecting every developer to do it
we ensure it's turned on locally for Travis.

Forgetting to bump the year in the copyright clause when hacking has
been quite common among curl developers, but a traditional checksrc
check isn't a good fit as it would penalize anyone hacking on January
1st (among other things). This adds a more selective COPYRIGHTYEAR
check which intends to only cover the currently hacked on changeset.

The check for updated copyright year is currently not enforced on all
files but only on files edited and/or committed locally. This is due to
the amount of files which aren't updated with their correct copyright
year at the time of their respective commit.

To further avoid running this expensive check for every developer, it
adds a new local override mode for checksrc where a .checksrc file can
be used to turn on extended warnings locally.

Closes #3303
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Closes #3335
[ci skip]

This backpedals back the documents to the state before bountygraph.

Closes #3311