Update upstream source from tag 'upstream/3.0.0'

Update to upstream version '3.0.0'
with Debian dir 15a61e773eb0fc4071ed8d651c0d11059fa64f32

LICENSE

+Copyright (C) 2012-2018 Roman Arutyunyan
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.rst

+********************
+nginx-dav-ext-module
+********************
+
+nginx_ WebDAV_ PROPFIND,OPTIONS,LOCK,UNLOCK support.
+
+.. contents::
+
+
+About
+=====
+
+The standard ngx_http_dav_module_ provides partial WebDAV_ implementation and
+only supports GET,HEAD,PUT,DELETE,MKCOL,COPY,MOVE methods.
+
+For full WebDAV_ support in nginx_ you need to enable the standard
+ngx_http_dav_module_ as well as this module for the missing methods.
+
+
+Build
+=====
+
+Building nginx_ with the module:
+
+.. code-block:: bash
+
+    # static module
+    $ ./configure --with-http_dav_module --add-module=/path/to/nginx-dav-ext-module
+
+    # dynamic module
+    $ ./configure --with-http_dav_module --add-dynamic-module=/path/to/nginx-dav-ext-module
+
+Trying to compile nginx_ with this module but without ngx_http_dav_module_ will
+result in compilation error.
+
+
+Requirements
+============
+
+- nginx_ version >= 1.13.4
+- ``libxml2`` + ``libxslt``
+
+The ``libxslt`` library is technically redundant and is only required since this
+combination is supported by nginx_ for the xslt module.
+Using builtin nginx mechanisms for linking against third-party libraries
+brings certain compatibility benefits.
+However this redundancy can be easily eliminated in the ``config`` file.
+
+
+Testing
+=======
+
+The module tests require standard nginx-tests_ and Perl ``HTTP::DAV`` library.
+
+.. code-block:: bash
+
+    $ export PERL5LIB=/path/to/nginx-tests/lib
+    $ export TEST_NGINX_BINARY=/path/to/nginx
+    $ prove t
+
+
+Locking
+=======
+
+- Only the exclusive write locks are supported, which is the only type of locks
+  described in the WebDAV_ specification.
+
+- All currently held locks are kept in a list.
+  Checking if an object is constrained by a lock requires O(n) operations.
+  A huge number of simultaneously held locks may degrade performance.
+  Thus it is not recommended to have a large lock timeout which would increase
+  the number of locks.
+
+
+Directives
+==========
+
+dav_ext_methods
+---------------
+
+========== ====
+*Syntax:*  ``dav_ext_methods [PROPFIND] [OPTIONS] [LOCK] [UNLOCK]``
+*Context:* http, server, location
+========== ====
+
+Enables support for the specified WebDAV methods in the current scope.
+
+dav_ext_lock_zone
+-----------------
+
+========== ====
+*Syntax:*  ``dav_ext_lock_zone zone=NAME:SIZE [timeout=TIMEOUT]``
+*Context:* http
+========== ====
+
+Defines a shared zone for WebDAV locks with specified NAME and SIZE.
+Also, defines a lock expiration TIMEOUT.
+Default lock timeout value is 1 minute.
+
+
+dav_ext_lock
+------------
+
+========== ====
+*Syntax:*  ``dav_ext_lock zone=NAME``
+*Context:* http, server, location
+========== ====
+
+Enables WebDAV locking in the specified scope.
+Locks are stored in the shared zone specified by NAME.
+This zone must be defined with the ``dav_ext_lock_zone`` directive.
+
+Note that even though this directive enables locking capabilities in the
+current scope, HTTP methods LOCK and UNLOCK should also be explicitly specified
+in the ``dav_ext_methods``.
+
+
+Example 1
+=========
+
+Simple lockless example::
+
+    location / {
+        root /data/www;
+
+        dav_methods PUT DELETE MKCOL COPY MOVE;
+        dav_ext_methods PROPFIND OPTIONS;
+    }
+
+
+Example 2
+=========
+
+WebDAV with locking::
+
+    http {
+        dav_ext_lock_zone zone=foo:10m;
+
+        ...
+
+        server {
+            ...
+
+            location / {
+                root /data/www;
+
+                dav_methods PUT DELETE MKCOL COPY MOVE;
+                dav_ext_methods PROPFIND OPTIONS LOCK UNLOCK;
+                dav_ext_lock zone=foo;
+            }
+        }
+    }
+
+
+Example 3
+=========
+
+WebDAV with locking which works with MacOS client::
+
+    http {
+        dav_ext_lock_zone zone=foo:10m;
+
+        ...
+
+        server {
+            ...
+
+            location / {
+                root /data/www;
+
+                # enable creating directories without trailing slash
+                set $x $uri$request_method;
+                if ($x ~ [^/]MKCOL$) {
+                    rewrite ^(.*)$ $1/;
+                }
+
+                dav_methods PUT DELETE MKCOL COPY MOVE;
+                dav_ext_methods PROPFIND OPTIONS LOCK UNLOCK;
+                dav_ext_lock zone=foo;
+            }
+        }
+    }
+
+.. _ngx_http_dav_module: http://nginx.org/en/docs/http/ngx_http_dav_module.html
+.. _nginx-tests: http://hg.nginx.org/nginx-tests
+.. _nginx: http://nginx.org
+.. _WebDAV: https://tools.ietf.org/html/rfc4918
+.. _`RFC4918 If Header`: https://tools.ietf.org/html/rfc4918#section-10.4

config

+ngx_addon_name=ngx_http_dav_ext_module
+
+ngx_module_type=HTTP
+ngx_module_name=ngx_http_dav_ext_module
+
+# nginx has robust builtin support for linking against
+# libxml2+libxslt.  This is definitelty the right way to go if
+# building nginx with the xslt module, in which case libxslt will
+# be linked anyway.  In other cases libxslt is just redundant.
+# If that's a big deal, libxml2 can be linked directly:
+# ngx_module_libs=-lxml2
+
+ngx_module_libs=LIBXSLT
+
+ngx_module_srcs="$ngx_addon_dir/ngx_http_dav_ext_module.c"
+
+. auto/module

t/dav_ext.t

+#!/usr/bin/perl
+
+# (C) Roman Arutyunyan
+
+# Tests for nginx-dav-ext-module.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+use HTTP::DAV
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http dav/)->plan(20);
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    dav_ext_lock_zone zone=foo:10m timeout=10s;
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        location / {
+            dav_methods PUT DELETE MKCOL COPY MOVE;
+            dav_ext_methods PROPFIND OPTIONS LOCK UNLOCK;
+            dav_ext_lock zone=foo;
+        }
+    }
+}
+
+EOF
+
+$t->write_file('foo', 'foo');
+
+$t->run();
+
+###############################################################################
+
+my $url = "http://127.0.0.1:8080";
+
+my $content;
+
+my $d = HTTP::DAV->new();
+$d->open($url);
+
+my $d2 = HTTP::DAV->new();
+$d2->open($url);
+
+#debug:
+#$d->DebugLevel(3);
+#see /tmp/perldav_debug.txt.
+
+my $p = $d->propfind('/', 1);
+is($p->is_collection, 1, 'propfind dir collection');
+is($p->get_property('displayname'), '/', 'propfind dir displayname');
+is($p->get_uri(), 'http://127.0.0.1:8080/', 'propfind dir uri');
+
+$p = $d->propfind('/foo');
+is($p->is_collection, 0, 'propfind file collection');
+is($p->get_property('displayname'), 'foo', 'propfind file displayname');
+is($p->get_uri(), 'http://127.0.0.1:8080/foo', 'propfind file uri');
+is($p->get_property('getcontentlength'), '3', 'propfind file size');
+
+$d->lock('/foo');
+is($d->lock('/foo'), 0, 'prevent double lock');
+
+$d->unlock('/foo');
+is($d->lock('/foo'), 1, 'relock');
+
+$d->lock('/bar');
+$p = $d->propfind('/bar');
+is($p->get_property('displayname'), 'bar', 'lock creates a file');
+
+$d->get('/bar', \$content) or $content = 'none';
+is($content, '', 'lock creates an empty file');
+
+$content = "bar";
+$d->put(\$content, '/bar');
+$d->get('/bar', \$content) or $content = '';
+is($content, 'bar', 'put lock');
+
+$content = "qux";
+$d2->put(\$content, '/bar');
+$d2->get('/bar', \$content) or $content = '';
+isnt($content, 'qux', 'prevent put lock');
+
+$d->mkcol('/d/');
+$d->lock('/d/');
+$d->copy('/bar', '/d/bar');
+$d->get('/d/bar', \$content) or $content = '';
+is($content, 'bar', 'copy lock');
+
+$d2->copy('/bar', '/d/qux');
+$d2->get('/d/qux', \$content) or $content = '';
+isnt($content, 'bar', 'prevent copy lock');
+
+$d2->delete('/d/bar');
+$d2->get('/d/bar', \$content) or $content = '';
+is($content, 'bar', 'prevent delete lock');
+
+$d->delete('/d/bar');
+$d->get('/d/bar', \$content) or $content = '';
+is($content, '', 'delete lock');
+
+$d->mkcol('/d/c/');
+$p = $d->propfind('/d/c/');
+is($p->is_collection, 1, 'mkcol lock');
+
+$d2->mkcol('/d/e/');
+is($d2->propfind('/d/e/'), 0, 'prevent mkcol lock');
+
+$d->unlock('/d/');
+$d->lock('/d/', -depth=>"0");
+$content = 'qux';
+$d2->put(\$content, '/d/c/qux');
+$d2->get('/d/c/qux', \$content) or $content = '';
+is($content, 'qux', 'put to a depth-0-locked subdirectory');
+
+###############################################################################