Make use of macro substitution of suffix patterns to remove duplication
of manual names. This approach is portable according to
http://pubs.opengroup.org/onlinepubs/009695399/utilities/make.html

Closes https://github.com/curl/curl/pull/1287

The character set in POSIX is set by the locale defined by (in
decreasing order of precedence) the LC_ALL, LC_CTYPE and LANG
environment variables (CHARSET was used by libidn but not libidn2).
LC_ALL is cleared to ensure that LC_CTYPE takes effect, but LC_ALL is
not used to set the locale to ensure that other parts of the locale
aren't overridden.  Since there doesn't seem to be a cross-platform way
of specifying a UTF-8 locale, and not all systems may support UTF-8, a
<precheck> is used to skip the test if UTF-8 can't be verified to be
available.  Test 1035 was also converted to UTF-8 for consistency, as
the actual character set used there is irrelevant to the test.

This patch uses a different UTF-8 locale than the last attempt, namely
en_US.UTF-8. This one has been verified on 7 different Linux and BSD
distributions and is more complete and usable than the locale UTF-8 (on
at least some systems).

- Change the encoding of the regex temp placeholder token to UTF-8.

Prior to this change the file contained special chars in a different
encoding than ASCII or UTF-8 making text editors and Python complain
when reading the file.

Closes https://github.com/curl/curl/pull/1271
Closes https://github.com/curl/curl/pull/1275

This reverts commit ecd1d020.

That commit caused test failures on my Debian Linux machine for all
changed test cases. We need to reconsider how that should get done.

Character set in POSIX is set by the locale defined (in decreasing order
of precedence) by the LC_ALL, LC_CTYPE and LANG environment variables (I
believe CHARSET is only historic). LC_ALL is cleared to ensure that
LC_CTYPE takes effect, but LC_ALL is not used to set the locale to
ensure that other parts of the locale aren't overriden, if set.  Since
there doesn't seem to be a cross-platform way of specifying a UTF-8
locale, and not all systems may support UTF-8, a <precheck> is used
(where relevant) to skip the test if UTF-8 isn't in use.  Test 1035 was
also converted to UTF-8 for consistency, as the actual character set
used there is irrelevant to the test.

If the compile-time CURL_CA_BUNDLE location is defined use it as the
default value for the proxy CA bundle location, which is the same as
what we already do for the regular CA bundle location.

Ref: https://github.com/curl/curl/pull/1257

Closes #1285

Closes #1280

Closes #1283
Fixes #1277

synced with df665f4df0f7a352

Reported-by:  <shachaf@users.noreply.github.com>

Fixes #1281

curl.1 is generated by the cmdline-opts script since 4c49b835.

f77dabef broke builds in Windows using Windows SSPI but not Windows SSL.

Bug: https://github.com/curl/curl/issues/1276


Reported-by:  <jveazey@users.noreply.github.com>

- Change CURLOPT_PROXY_CAPATH to return CURLE_NOT_BUILT_IN if the option
  is not supported, which is the same as what we already do for
  CURLOPT_CAPATH.

- Change the curl tool to handle CURLOPT_PROXY_CAPATH error
  CURLE_NOT_BUILT_IN as a warning instead of as an error, which is the
  same as what we already do for CURLOPT_CAPATH.

- Fix CAPATH docs to show that CURLE_NOT_BUILT_IN is returned when the
  respective CAPATH option is not supported by the SSL library.

Ref: https://github.com/curl/curl/pull/1257

The CURLOPT_SSL_VERIFYSTATUS option was not properly handled by libcurl
and thus even if the status couldn't be verified, the connection would
be allowed and the user would not be told about the failed verification.

Regression since cb4e2be7

CVE-2017-2629
Bug: https://curl.haxx.se/docs/adv_20170222.html

Reported-by: Marcus Hoffmann

- If the server has provided another challenge use it as the replacement
  input token if stale=TRUE. Otherwise previous credentials have failed
  so return CURLE_LOGIN_DENIED.

Prior to this change the stale directive was ignored and if another
challenge was received it would cause error CURLE_BAD_CONTENT_ENCODING.

Ref: https://tools.ietf.org/html/rfc2617#page-10

Bug: https://github.com/curl/curl/issues/928


Reported-by:  <tarek112@users.noreply.github.com>

Source: https://github.com/Microsoft/vcpkg/blob/7676b8780db1e1e591c4fc7eba4f96f73c428cb4/ports/curl/0002_fix_uwp.patch

Closes #1264

Since negative values are errors and not only -1. This makes SFTP upload
with --create-dirs work (again).

Closes #1269

- on the first invocation: keep security context returned by
  InitializeSecurityContext()

- on subsequent invocations: use MakeSignature() instead of
  InitializeSecurityContext() to generate HTTP digest response

Bug: https://github.com/curl/curl/issues/870
Reported-by: Andreas Roth

Closes https://github.com/curl/curl/pull/1251

Follow-up to 4b86113f

Fixes https://github.com/curl/curl/issues/793
Fixes https://github.com/curl/curl/issues/942

Properly resolve, convert and log the proxy host names.
Support the "--connect-to" feature for SOCKS proxies and for passive FTP
data transfers.

Follow-up to cb4e2be7

Reported-by: Jay Satiro
Fixes https://github.com/curl/curl/issues/1248

- While negotiating auth during PUT/POST if a user-specified
  Content-Length header is set send 'Content-Length: 0'.

This is what we do already in HTTPREQ_POST_FORM and what we did in the
HTTPREQ_POST case (regression since afd288b2).

Prior to this change no Content-Length header would be sent in such a
case.

Bug: https://curl.haxx.se/mail/lib-2017-02/0006.html
Reported-by: Dominik Hölzl

Closes https://github.com/curl/curl/pull/1242