index 5e665fac57d962215646290b8326d53c95b355f6..5488fb4c66ea3c498c2222d535c5cc8cba817813 100644 (file)
--- a/README
+++ b/README
IPv4 or IPv6 transparently. Other design principles were an object oriented
interface, simplicity and extensibility.
+ On top of liboping two command line applications have been built. “oping” is
+ a drop-in replacement for ping(1) with very similar output. “noping” is an
+ ncurses-based application which displays statistics while pinging and
+ highlights aberrant round-trip times.
+
Features
━━━━━━━━
“--without-perl-bindings”.
+Permissions
+━━━━━━━━━━━━━
+
+ On UNIX, special permissions are required to open raw sockets (raw(7)). If
+ you compile and install the “oping” and “noping” binaries as normal user
+ (which is strongly suggested), you won't be able to use the binaries as a
+ normal user, because you won't have the permission to open raw sockets.
+
+ Linux
+ ━━━━━
+ On Linux, the preferred method is to assign the required “capability” to the
+ binaries. This will allow the binary to open raw sockets, but doesn't give
+ any other permissions such as reading other users' files or shutting down the
+ system. The downside is that this mechanism is comparatively new: Assigning
+ capabilities to files is available since Linux 2.6.24.
+
+ To set the required capabilities, run (as user root):
+
+ # setcap cap_net_raw=ep /opt/oping/bin/oping
+ # setcap cap_net_raw=ep /opt/oping/bin/noping
+
+ Other UNIX
+ ━━━━━━━━━━
+ Capabilities are a nice but Linux-specific solution. To make “oping” and
+ “noping” available to unprivileged users on other UNIX systems, use the
+ traditional set-UID root solution. If your system supports “saved set-UIDs”
+ (basically all systems do), the applications will drop the privileges during
+ initialization and only regain them when actually opening the socket(s).
+
+ To set the set-UID bit, run (as user root):
+
+ # chown root: /opt/oping/bin/{,n}oping
+ # chmod u+s /opt/oping/bin/{,n}oping
+
+
+Licensing terms
+━━━━━━━━━━━━━━━
+
+ liboping is licensed under the “GNU Lesser General Public License” (LGPL),
+ version 2.1 or later. The exact licensing terms can be found in the file
+ “COPYING” included in the source distribution of liboping.
+
+ The “oping” and “noping” utilities included in this package are licensed
+ under the “GNU General Public License” (GPL), version 2. The full licensing
+ terms can be found online at <http://www.gnu.org/licenses/gpl-2.0.html>.
+
+
Author
━━━━━━
- Florian octo Forster <octo at verplant.org>
+ Florian “octo” Forster <ff at octo.it>