Import code into Git.

.gitignore

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+.vscode
+*.slo
+debian/debhelper-build-stamp
+debian/files
+debian/libapache2-mod-log-ipmask
+debian/*.debhelper.log
+debian/*.debhelper
+debian/*.substvars

LICENSE.txt

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Makefile

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+##
+##  Makefile -- Build procedure for sample log_ipmask Apache module
+##  Autogenerated via ``apxs -n log_ipmask -g''.
+##
+
+builddir=.
+top_srcdir=/usr/share/apache2
+top_builddir=/usr/share/apache2
+include /usr/share/apache2/build/special.mk
+
+CXX=c++
+CXXFLAGS=-std=c++11
+EXTRA_LDFLAGS=-lstdc++
+
+#   the used tools
+APACHECTL=apachectl
+
+#   additional defines, includes and libraries
+#DEFS=-Dmy_define=my_value
+#INCLUDES=-Imy/include/dir
+#LIBS=-Lmy/lib/dir -lmylib
+
+#   the default target
+all: local-shared-build
+
+#   install the shared object file into Apache
+install: install-modules-yes
+
+#   cleanup
+clean:
+	-rm -f mod_log_ipmask.o mod_log_ipmask.lo mod_log_ipmask.slo mod_log_ipmask.la
+
+#   simple test
+test: reload
+	lynx -mime_header http://localhost/log_ipmask
+
+#   install and activate shared object by reloading Apache to
+#   force a reload of the shared object file
+reload: install restart
+
+#   the general Apache start/restart/stop
+#   procedures
+start:
+	$(APACHECTL) start
+restart:
+	$(APACHECTL) restart
+stop:
+	$(APACHECTL) stop
+

NOTICE.txt

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+mod_log_ipmask module for the Apache HTTP Server
+Copyright 2018 aquenos GmbH.
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+Portions of this software were developed at the National Center
+for Supercomputing Applications (NCSA) at the University of
+Illinois at Urbana-Champaign.
+
+This software contains code derived from the RSA Data Security
+Inc. MD5 Message-Digest Algorithm, including various
+modifications by Spyglass Inc., Carnegie Mellon University, and
+Bell Communications Research, Inc (Bellcore).

README.md

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+mod_log_ipmask
+==============
+
+The mod_log_ipmask module is designed to work with version 2.4 of the Apache
+HTTP Server. It extends the mod_log_config module by overriding the `%a` and
+`%h` format strings in order to limit the number of IP address bits that are
+included in log files. This is intended for applications where partial logging
+of IP addresses is desired, but full IP addresses may not be logged due to
+privacy concerns.
+
+
+Installation
+------------
+
+On Debian-based systems, a package can be built from source by running `debuild`
+in the source tree. Subsequently, the generated `.deb` package can be installed
+with `dpkg`. The module has been developped for Ubuntu 16.04 LTS. When building
+it on other Debian-based distributions, slight modifications to the `Makefile`
+may be necessary.
+
+On other systems, the module can be built by running `make` and installed by
+running `make install`. The `Makefile` may need to be adapted if the
+configuration of the target system differs from Ubuntu 16.04 LTS (e.g. different
+Apache installation path, different compiler name or flags).
+
+
+Configuration
+-------------
+
+When using the Debian package, the module is automatically enabled during
+installation. The default configuration file can be found in
+`/etc/apache2/mods-available/log_ipmask.conf`.
+
+When installing the module using `make install` the following line needs to be
+added to the Apache HTTP Server configuration file in order to load the module.
+
+```
+LoadModule log_ipmask_module /usr/lib/apache2/modules/mod_log_ipmask.so
+```
+
+Obviously, the path to the module DSO file may need to be adjusted.
+
+The default configuration file distributed with the Debian package contains the
+following configuration directives:
+
+```
+LogDefaultIPv4Mask 24
+LogDefaultIPv6Mask 56
+```
+
+This limits the logging of IPv4 addresses to their first 24 bits and the logging
+of IPv6 addresses to their first 56 bits. If these directives are not specified,
+the module logs the full IP addresses by default.
+
+The `LogDefaultIPv4Mask` and `LogDefaultIPv6Mask` directives may be used on the
+server config or virtual host levels. Settings specified on the virtual host
+level override settings specified on the server config level.
+
+In order to not log any bits of the IP address, the mask can be set to zero.
+This results in the address `0.0.0.0` being logged for IPv4 addresses and the
+address `::` being logged for IPv6 addresses. In order to enable the logging of
+full IP addresses, `LogDefaultIPv4Mask` can be set to `32` and
+`LogDefaultIPv6Mask` can be set to `128`. These are also the default settings if
+the directives are not specified at all.
+
+The mask can also be configured on a per-log basis by adding the mask to the
+parameters of the `%a` or `%h` format string.
+
+Examples:
+
+- `%{8|16}a` logs the first 8 bits of IPv4 addresses and the first 16 bits of
+  IPv6 addresses.
+- `%{c|8|16}a` logs the first 8 bits of IPv4 addresses and the first 16 bits of
+  IPv6 addresses, but uses the peer IP address of the connection (as
+  described in the documentation of
+  [mod_log_config](http://httpd.apache.org/docs/2.4/mod/mod_log_config.html)).
+- `%a` logs the address according to the settings specified by
+  `LogDefaultIPv4Mask` and `LogDefaultIPv6Mask`.
+- `%{c}a` logs the address according to the settings specified by
+  `LogDefaultIPv4Mask` and `LogDefaultIPv6Mask`, but uses the peer IP address of
+  the connection (as described in the documentation of
+  [mod_log_config](http://httpd.apache.org/docs/2.4/mod/mod_log_config.html)).
+- `%{8|16}h` logs the first 8 bits of IPv4 addresses and the first 16 bits of
+  IPv6 addresses. If the remote host name has been resolved, it is logged as is.
+- `%a` logs the address according to the settings specified by
+  `LogDefaultIPv4Mask` and `LogDefaultIPv6Mask`.  If the remote host name has
+  been resolved, it is logged as is.
+
+
+Limitations
+-----------
+
+When using the `%h` format string, only IP addresses are masked. If the IP
+address has been resolved into a hostname, the hostname is kept as-is.
+
+
+Trivia
+------
+
+Despite its name, this module does not share any code with the mod_log_ipmask
+module from https://github.com/webfactory/mod_log_ipmask/.

debian/changelog

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+apache2-mod-log-ipmask (1.0.0) stable; urgency=low
+
+  * Initial release.
+
+ -- Sebastian Marsching <apache2-mod-log-ipmask-maintainer@oss.aquenos.com>  Thu, 01 Mar 2018 16:20:18 +0100

debian/compat

@@ -0,0 +1 @@
+9