summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDimitri Staessens <[email protected]>2020-05-10 11:50:28 +0200
committerDimitri Staessens <[email protected]>2020-05-16 14:39:25 +0200
commit9495259fb0b8c9e21c56c7588338375e579185c3 (patch)
tree5f9e459469a2abf6061ecae0eafc82820ae079bb
downloadpyouroboros-7390c2926e977a0e98d4865359ab75054533e64f.tar.gz
pyouroboros-7390c2926e977a0e98d4865359ab75054533e64f.zip
Initial commit: Basic Ouroboros API0.17
Signed-off-by: Dimitri Staessens <[email protected]>
-rw-r--r--LICENSE344
-rw-r--r--README.md174
-rwxr-xr-xexamples/oecho.py67
-rwxr-xr-xexamples/oecho_set.py71
-rw-r--r--ffi/fccntl_wrap.h73
-rw-r--r--ffi/pyouroboros_build.py131
-rw-r--r--ouroboros/dev.py392
-rw-r--r--ouroboros/event.py135
-rw-r--r--ouroboros/qos.py110
-rwxr-xr-xsetup.py25
10 files changed, 1522 insertions, 0 deletions
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a618b2b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,344 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
+other authorized party saying it may be distributed under the terms of
+this Lesser General Public License (also called "this License").
+Each licensee is addressed as "you".
+
+ A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+ The "Library", below, refers to any such software library or work
+which has been distributed under these terms. A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language. (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+ "Source code" for a work means the preferred form of the work for
+making modifications to it. For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+ Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it). Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+
+ 1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+ You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+ 2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) The modified work must itself be a software library.
+
+ b) You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ c) You must cause the whole of the work to be licensed at no
+ charge to all third parties under the terms of this License.
+
+ d) If a facility in the modified Library refers to a function or a
+ table of data to be supplied by an application program that uses
+ the facility, other than as an argument passed when the facility
+ is invoked, then you must make a good faith effort to ensure that,
+ in the event an application does not supply such function or
+ table, the facility still operates, and performs whatever part of
+ its purpose remains meaningful.
+
+ (For example, a function in a library to compute square roots has
+ a purpose that is entirely well-defined independent of the
+ application. Therefore, Subsection 2d requires that any
+ application-supplied function or table used by this function must
+ be optional: if the application does not supply it, the square
+ root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library. To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License. (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.) Do not make any other change in
+these notices.
+
+ Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+ This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+ 4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
+under the terms of Sections 1 and 2 above provided that you accompany
+it with the complete corresponding machine-readable source code, which
+must be distributed under the terms of Sections 1 and 2 above on a
+medium customarily used for software interchange.
+
+ If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 5. A program that contains no derivative of any portion of the
+Library, but is designed to work with the Library by being compiled or
+linked with it, is called a "work that uses the Library". Such a
+work, in isolation, is not a derivative work of the Library, and
+therefore falls outside the scope of this License.
+
+ However, linking a "work that uses the Library" with the Library
+creates an executable that is a derivative of the Library (because it
+contains portions of the Library), rather than a "work that uses the
+library". The executable is therefore covered by this License.
+Section 6 states terms for distribution of such executables.
+
+ When a "work that uses the Library" uses material from a header file
+that is part of the Library, the object code for the work may be a
+derivative work of the Library even though the source code is not.
+Whether this is true is especially significant if the work can be
+linked without the Library, or if the work is itself a library. The
+threshold for this to be true is not precisely defined by law.
+
+ If such an object file uses only numerical parameters, data
+structure layouts and accessors, and small macros and small inline
+functions (ten lines or less in length), then the use of the object
+file is unrestricted, regardless of whether it is legally a derivative
+work. (Executables containing this object code plus portions of the
+Library will still fall under Section 6.)
+
+ Otherwise, if the work is a derivative of the Library, you may
+distribute the object code for the work under the terms of Section 6.
+Any executables containing that work also fall under Section 6,
+whether or not they are linked directly with the Library itself.
+
+ 6. As an exception to the Sections above, you may also combine or
+link a "work that uses the Library" with the Library to produce a
+work containing portions of the Library, and distribute that work
+under terms of your choice, provided that the terms permit
+modification of the work for the customer's own use and reverse
+engineering for debugging such modifications.
+
+ You must give prominent notice with each copy of the work that the
+Library is used in it and that the Library and its use are covered by
+this License. You must supply a copy of this License. If the work
+during execution displays copyright notices, you must include the
+copyright notice for the Library among them, as well as a reference
+directing the user to the copy of this License. Also, you must do one
+of these things:
+
+ a) Accompany the work with the complete corresponding
+ machine-readable source code for the Library including whatever
+ changes were used in the work (which must be distributed under
+ Sections 1 and 2 above); and, if the work is an executable linked
+ with the Library, with the complete machine-readable "work that
+ uses the Library", as object code and/or source code, so that the
+ user can modify the Library and then relink to produce a modified
+ executable containing the modified Library. (It is understood
+ that the user who changes the contents of definitions files in the
+ Library will not necessarily be able to recompile the application
+ to use the modified definitions.)
+
+ b) Use a suitable shared library mechanism for linking with the
+ Library. A suitable mechanism is one that (1) uses at run time a
+ copy of the library already present on the user's computer system,
+ rather than copying library functions into the executable, and (2)
+ will operate properly with a modified version of the library, if
+ the user installs one, as long as the modified version is
+ interface-compatible with the version that the work was made with.
+
+ c) Accompany the work with a written offer, valid for at
+ least three years, to give the same user the materials
+ specified in Subsection 6a, above, for a charge no more
+ than the cost of performing this distribution.
+
+ d) If distribution of the work is made by offering access to copy
+ from a designated place, offer equivalent access to copy the above
+ specified materials from the same place.
+
+ e) Verify that the user has already received a copy of these
+ materials or that you have already sent this user a copy.
+
+ For an executable, the required form of the "work that uses the
+Library" must include any data and utility programs needed for
+reproducing the executable from it. However, as a special exception,
+the materials to be distributed need not include anything that is
+normally distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies
+the executable.
+
+ It may happen that this requirement contradicts the license
+restrictions of other proprietary libraries that do not normally
+accompany the operating system. Such a contradiction means you cannot
+use both them and the Library together in an executable that you
+distribute.
+
+ 7. You may place library facilities that are a work based on the
+Library side-by-side in a single library together with other library
+facilities not covered by this License, and distribute such a combined
+library, provided that the separate distribution of the work based on
+the Library and of the other library facilities is otherwise
+permitted, and provided that you do these two things:
+
+ a) Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library
+ facilities. This must be distributed under the terms of the
+ Sections above.
+
+ b) Give prominent notice with the combined library of the fact
+ that part of it is a work based on the Library, and explaining
+ where to find the accompanying uncombined form of the same work.
+
+ 8. You may not copy, modify, sublicense, link with, or distribute
+the Library except as expressly provided under this License. Any
+attempt otherwise to copy, modify, sublicense, link with, or
+distribute the Library is void, and will automatically terminate your
+rights under this License. However, parties who have received copies,
+or rights, from you under this License will not have their licenses
+terminated so long as such parties remain in full compliance.
+
+ 9. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Library or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Library (or any work based on the
+Library), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Library or works based on it.
+
+ 10. Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the
+original licensor to copy, distribute, link with or modify the Library
+subject to these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties with
+this License.
+
+ 11. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Library at all. For example, if a patent
+license would not permit royalty-free redistribution of the Library by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply,
+and the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License may add
+an explicit geographical distribution limitation excluding those countries,
+so that distribution is permitted only in or among countries not thus
+excluded. In such case, this License incorporates the limitation as if
+written in the body of this License.
+
+ 13. The Free Software Foundation may publish revised and/or new
+versions of the Lesser General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation. If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+ 14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission. For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this. Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+ NO WARRANTY
+
+ 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+ END OF TERMS AND CONDITIONS \ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f4df213
--- /dev/null
+++ b/README.md
@@ -0,0 +1,174 @@
+# pyOuroboros
+> a Python API for the Ouroboros recursive network prototype
+
+## Dependencies
+
+pyOuroboros requires <a href="https://ouroboros.rocks">Ouroboros</a>
+to be installed
+
+## Installation
+To build and install PyOuroboros:
+
+```shell
+./setup.py install
+```
+
+## Basic Usage
+
+```Python
+from ouroboros.dev import *
+```
+
+Server side: Accepting a flow:
+
+```Python
+f = flow_accept()
+```
+
+returns a new allocated flow object.
+
+Client side: Allocating a flow to a certain _name_:
+
+```Python
+f = flow_alloc("name")
+```
+
+returns a new allocated Flow object.
+
+Broadcast:
+
+```Python
+f = flow_join("name")
+```
+
+returns a new allocated Flow object.
+
+Deallocation:
+
+```Python
+f.dealloc()
+```
+
+deallocates the flow. After this call, the Flow object is not readable
+or writeable anymore.
+
+```Python()
+f.alloc("name")
+```
+
+ will allocate a new flow for an existing Flow object.
+
+To read / write from a flow:
+
+```Python
+f.read(count) # read up to _count_ bytes and return bytes
+f.readline(count) # read up to _count_ characters as a string
+f.write(buf, count) # write up to _count_ bytes from buffer
+f.writeline(str, count) # write up to _count_ characters from string
+```
+
+## Quality of Service (QoS)
+
+The QoS spec details have not been finalized in Ouroboros. It is just
+here to give a general idea and to control some basics of the flow.
+You can specify a QoSSpec for flow allocation.
+
+For instance,
+
+```Python
+qos = QoSSpec(loss=0, cypher_s=256)
+f = flow_alloc("name", qos)
+```
+
+will create a new flow with FRCP retransmission enabled and encrypted
+using a 256-bit ECDHE-AES-SHA3 cypher.
+
+## Manipulating flows
+
+A number of methods are available for how to interact with Flow
+
+```Python
+f.set_snd_timeout(0.5) # set timeout for blocking write
+f.set_rcv_timeout(1.0) # set timeout for blocking read
+f.get_snd_timeout() # get timeout for blocking write
+f.get_rcv_timeout() # get timeout for blocking read
+f.get_qos() # get the QoSSpec for this flow
+f.get_rx_queue_len() # get the number of packets in the rx buffer
+f.get_tx_queue_len() # get the number of packets in the tx buffer
+f.set_flags(flags) # set a number of flags for this flow
+f.get_flags() # get the flags for this flow
+```
+
+The flags are specified as an enum FlowProperties:
+
+```Python
+class FlowProperties(IntFlag):
+ ReadOnly
+ WriteOnly
+ ReadWrite
+ Down
+ NonBlockingRead
+ NonBlockingWrite
+ NonBlocking
+ NoPartialRead
+ NoPartialWrite
+```
+
+See the Ouroboros fccntl documentation for more details.
+
+```shell
+man fccntl
+```
+
+## Event API
+
+Multiple flows can be monitored for activity in parallel using a
+FlowSet and FEventQueue objects.
+
+FlowSets allow grouping a bunch of Flow objects together to listen for
+activity. It can be constructed with an optional list of Flows, or
+flows can be added or removed using the following methods:
+
+```Python
+set = FlowSet() # create a flow set,
+set.add(f) # add a Flow 'f' to this set
+set.remove(f) # remove a Flow 'f' from this set
+set.zero() # remove all Flows in this set
+```
+
+An FEventQueue stores pending events on flows.
+
+The event types are defined as follows:
+```Python
+class FEventType(IntFlag):
+ FlowPkt = 1
+ FlowDown = 2
+ FlowUp = 4
+ FlowAlloc = 8
+ FlowDealloc = 16
+```
+
+and can be obtained by calling the next method:
+
+```Python
+ f, t = fq.next() # Return active flow 'f' and type of event 't'
+```
+
+An FEventQueue is populated from a FlowSet.
+
+```Python
+fq = FEventQueue() # Create an eventqueue
+set = FlowSet([f1, f2, f3]) # Create a new set with a couple of Flow objects
+set.wait(fq, timeo=1.0) # Wait for 1 second or until event
+while f, t = fq.next():
+ if t == FEventType.FlowPkt:
+ msg = f.readline()
+ ...
+```
+
+## Examples
+
+Example code is in the examples folder.
+
+## License
+pyOuorboros is LGPLv2.1. The examples are 3-clause BSD.
diff --git a/examples/oecho.py b/examples/oecho.py
new file mode 100755
index 0000000..35db8b2
--- /dev/null
+++ b/examples/oecho.py
@@ -0,0 +1,67 @@
+#!/bin/python
+
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# A simple echo application
+#
+# Dimitri Staessens <[email protected]>
+#
+# 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.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# 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 HOLDER 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.
+
+from ouroboros.dev import *
+import argparse
+
+
+def client():
+ f = flow_alloc("oecho")
+ f.writeline("Hello, PyOuroboros!")
+ print(f.readline())
+ f.dealloc()
+
+
+def server():
+ print("Starting the server.")
+ while True:
+ f = flow_accept()
+ print("New flow.")
+ line = f.readline()
+ print("Message from client is " + line)
+ f.writeline(line)
+ f.dealloc()
+
+
+if __name__ == "__main__":
+ parser = argparse.ArgumentParser(description='A simple echo client/server')
+ parser.add_argument('-l', '--listen', help='run as a server', action='store_true')
+ args = parser.parse_args()
+ if args.listen is True:
+ server()
+ else:
+ client()
diff --git a/examples/oecho_set.py b/examples/oecho_set.py
new file mode 100755
index 0000000..93cae8f
--- /dev/null
+++ b/examples/oecho_set.py
@@ -0,0 +1,71 @@
+#!/bin/python
+
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# A simple echo application
+#
+# Dimitri Staessens <[email protected]>
+#
+# 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.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# 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 HOLDER 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.
+
+from ouroboros.event import *
+import argparse
+
+
+def client():
+ f = flow_alloc("oecho")
+ f.writeline("Hello, PyOuroboros!")
+ print(f.readline())
+ f.dealloc()
+
+
+def server():
+ print("Starting the server.")
+ while True:
+ f = flow_accept()
+ print("New flow.")
+ fs = FlowSet([f])
+ fq = FEventQueue()
+ fs.wait(fq)
+ f2, _ = fq.next()
+ line = f2.readline()
+ print("Message from client is " + line)
+ f2.writeline(line)
+ f2.dealloc()
+
+
+if __name__ == "__main__":
+ parser = argparse.ArgumentParser(description='A simple echo client/server')
+ parser.add_argument('-l', '--listen', help='run as a server', action='store_true')
+ args = parser.parse_args()
+ if args.listen is True:
+ server()
+ else:
+ client()
diff --git a/ffi/fccntl_wrap.h b/ffi/fccntl_wrap.h
new file mode 100644
index 0000000..ab227ea
--- /dev/null
+++ b/ffi/fccntl_wrap.h
@@ -0,0 +1,73 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2020
+ *
+ * An fccntl wrapper
+ *
+ * Dimitri Staessens <[email protected]>
+ * Sander Vrijders <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#include <ouroboros/fccntl.h>
+
+int flow_set_snd_timeout(int fd, struct timespec * ts)
+{
+ return fccntl(fd, FLOWSSNDTIMEO, ts);
+}
+
+int flow_set_rcv_timeout(int fd, struct timespec * ts)
+{
+ return fccntl(fd, FLOWSRCVTIMEO, ts);
+}
+
+int flow_get_snd_timeout(int fd, struct timespec * ts)
+{
+ return fccntl(fd, FLOWGSNDTIMEO, ts);
+}
+
+int flow_get_rcv_timeout(int fd, struct timespec * ts)
+{
+ return fccntl(fd, FLOWGRCVTIMEO, ts);
+}
+
+int flow_get_qos(int fd, qosspec_t * qs)
+{
+ return fccntl(fd, FLOWGQOSSPEC, qs);
+}
+
+int flow_get_rx_qlen(int fd, size_t * sz)
+{
+ return fccntl(fd, FLOWGRXQLEN, sz);
+}
+
+int flow_get_tx_qlen(int fd, size_t * sz)
+{
+ return fccntl(fd, FLOWGTXQLEN, sz);
+}
+
+int flow_set_flags(int fd, uint32_t flags)
+{
+ return fccntl(fd, FLOWSFLAGS, flags);
+}
+
+int flow_get_flags(int fd)
+{
+ uint32_t flags;
+
+ if (fccntl(fd, FLOWGFLAGS, &flags))
+ return -EPERM;
+
+ return (int) flags;
+}
diff --git a/ffi/pyouroboros_build.py b/ffi/pyouroboros_build.py
new file mode 100644
index 0000000..fdec53a
--- /dev/null
+++ b/ffi/pyouroboros_build.py
@@ -0,0 +1,131 @@
+#
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# Python API for applications
+#
+# Dimitri Staessens <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# version 2.1 as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., http://www.fsf.org/about/contact/.
+#
+
+from cffi import FFI
+
+ffibuilder: FFI = FFI()
+
+ffibuilder.cdef("""
+/* OUROBOROS QOS.H */
+typedef struct qos_spec {
+ uint32_t delay; /* In ms */
+ uint64_t bandwidth; /* In bits/s */
+ uint8_t availability; /* Class of 9s */
+ uint32_t loss; /* Packet loss */
+ uint32_t ber; /* Bit error rate, errors per billion bits */
+ uint8_t in_order; /* In-order delivery, enables FRCT */
+ uint32_t max_gap; /* In ms */
+ uint16_t cypher_s; /* Cypher strength, 0 = no encryption */
+} qosspec_t;
+
+/* OUROBOROS DEV.H */
+/* Returns flow descriptor, qs updates to supplied QoS. */
+int flow_alloc(const char * dst_name,
+ qosspec_t * qs,
+ const struct timespec * timeo);
+
+/* Returns flow descriptor, qs updates to supplied QoS. */
+int flow_accept(qosspec_t * qs,
+ const struct timespec * timeo);
+
+/* Returns flow descriptor, qs updates to supplied QoS. */
+int flow_join(const char * bc,
+ qosspec_t * qs,
+ const struct timespec * timeo);
+
+int flow_dealloc(int fd);
+
+ssize_t flow_write(int fd,
+ const void * buf,
+ size_t count);
+
+ssize_t flow_read(int fd,
+ void * buf,
+ size_t count);
+
+/*OUROBOROS FCCNTL.H, VIA WRAPPER */
+int flow_set_snd_timeout(int fd, struct timespec * ts);
+
+int flow_set_rcv_timeout(int fd, struct timespec * ts);
+
+int flow_get_snd_timeout(int fd, struct timespec * ts);
+
+int flow_get_rcv_timeout(int fd, struct timespec * ts);
+
+int flow_get_qos(int fd, qosspec_t * qs);
+
+int flow_get_rx_qlen(int fd, size_t * sz);
+
+int flow_get_tx_qlen(int fd, size_t * sz);
+
+int flow_set_flags(int fd, uint32_t flags);
+
+int flow_get_flags(int fd);
+
+/*OUROBOROS FQUEUE.H */
+
+struct flow_set;
+
+struct fqueue;
+
+typedef struct flow_set fset_t;
+typedef struct fqueue fqueue_t;
+
+fset_t * fset_create(void);
+
+void fset_destroy(fset_t * set);
+
+fqueue_t * fqueue_create(void);
+
+void fqueue_destroy(struct fqueue * fq);
+
+void fset_zero(fset_t * set);
+
+int fset_add(fset_t * set,
+ int fd);
+
+bool fset_has(const fset_t * set,
+ int fd);
+
+void fset_del(fset_t * set,
+ int fd);
+
+int fqueue_next(fqueue_t * fq);
+
+int fqueue_type(fqueue_t * fq);
+
+ssize_t fevent(fset_t * set,
+ fqueue_t * fq,
+ const struct timespec * timeo);
+""")
+
+ffibuilder.set_source("_ouroboros_cffi",
+ """
+#include "ouroboros/qos.h"
+#include "ouroboros/dev.h"
+#include "fccntl_wrap.h"
+#include "ouroboros/fqueue.h"
+ """,
+ libraries=['ouroboros-dev'],
+ extra_compile_args=["-I./ffi/"])
+
+if __name__ == "__main__":
+ ffibuilder.compile(verbose=True)
diff --git a/ouroboros/dev.py b/ouroboros/dev.py
new file mode 100644
index 0000000..36d9583
--- /dev/null
+++ b/ouroboros/dev.py
@@ -0,0 +1,392 @@
+#
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# Python API for applications
+#
+# Dimitri Staessens <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# version 2.1 as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., http://www.fsf.org/about/contact/.
+#
+
+from _ouroboros_cffi import ffi, lib
+import errno
+from enum import IntFlag
+from ouroboros.qos import *
+from ouroboros.qos import _qos_to_qosspec, _fl_to_timespec, _qosspec_to_qos, _timespec_to_fl
+
+# Some constants
+MILLION = 1000 * 1000
+BILLION = 1000 * 1000 * 1000
+
+
+# ouroboros exceptions
+class FlowAllocatedException(Exception):
+ pass
+
+
+class FlowNotAllocatedException(Exception):
+ pass
+
+
+class FlowDownException(Exception):
+ pass
+
+
+class FlowPermissionException(Exception):
+ pass
+
+
+class FlowException(Exception):
+ pass
+
+
+class FlowDeallocWarning(Warning):
+ pass
+
+
+def _raise(e: int) -> None:
+ if e >= 0:
+ return
+
+ print("error: " + str(e))
+ if e == -errno.ETIMEDOUT:
+ raise TimeoutError()
+ if e == -errno.EINVAL:
+ raise ValueError()
+ if e == -errno.ENOMEM:
+ raise MemoryError()
+ else:
+ raise FlowException()
+
+
+class FlowProperties(IntFlag):
+ ReadOnly = 0o0
+ WriteOnly = 0o1
+ ReadWrite = 0o2
+ Down = 0o4
+ NonBlockingRead = 0o1000
+ NonBlockingWrite = 0o2000
+ NonBlocking = NonBlockingRead | NonBlockingWrite
+ NoPartialRead = 0o10000
+ NoPartialWrite = 0o200000
+
+
+class Flow:
+
+ def __init__(self):
+ self.__fd: int = -1
+
+ def alloc(self,
+ dst: str,
+ qos: QoSSpec = None,
+ timeo: float = None) -> Optional[QoSSpec]:
+ """
+ Allocates a flow with a certain QoS to a destination
+
+ :param dst: The destination name (string)
+ :param qos: The QoS for the requested flow (QoSSpec)
+ :param timeo: The timeout for the flow allocation (None -> forever, 0->async)
+ :return: The QoS for the new flow
+ """
+
+ if self.__fd >= 0:
+ raise FlowAllocatedException()
+
+ _qos = _qos_to_qosspec(qos)
+
+ _timeo = _fl_to_timespec(timeo)
+
+ self.__fd = lib.flow_alloc(dst.encode(), _qos, _timeo)
+
+ _raise(self.__fd)
+
+ return _qosspec_to_qos(_qos)
+
+ def accept(self,
+ timeo: float = None) -> QoSSpec:
+ """
+ Accepts new flows and returns the QoS
+
+ :param timeo: The timeout for the flow allocation (None -> forever, 0->async)
+ :return: The QoS for the new flow
+ """
+
+ if self.__fd >= 0:
+ raise FlowAllocatedException()
+
+ _qos = ffi.new("qosspec_t *")
+
+ _timeo = _fl_to_timespec(timeo)
+
+ self.__fd = lib.flow_accept(_qos, _timeo)
+
+ _raise(self.__fd)
+
+ return _qosspec_to_qos(_qos)
+
+ def join(self,
+ dst: str,
+ qos: QoSSpec = None,
+ timeo: float = None) -> Optional[QoSSpec]:
+ """
+ Join a broadcast layer
+
+ :param dst: The destination broadcast layer name (string)
+ :param qos: The QoS for the requested flow (QoSSpec)
+ :param timeo: The timeout for the flow allocation (None -> forever, 0->async)
+ :return: The QoS for the flow
+ """
+
+ if self.__fd >= 0:
+ raise FlowAllocatedException()
+
+ _qos = _qos_to_qosspec(qos)
+
+ _timeo = _fl_to_timespec(timeo)
+
+ self.__fd = lib.flow_join(dst.encode(), _qos, _timeo)
+
+ _raise(self.__fd)
+
+ return _qosspec_to_qos(_qos)
+
+ def dealloc(self):
+ """
+ Deallocate a flow
+
+ """
+
+ self.__fd = lib.flow_dealloc(self.__fd)
+
+ if self.__fd < 0:
+ raise FlowDeallocWarning
+
+ self.__fd = -1
+
+ def write(self,
+ buf: bytes,
+ count: int = None) -> int:
+ """
+ Attempt to write <count> bytes to a flow
+
+ :param buf: Buffer to write from
+ :param count: Number of bytes to write from the buffer
+ :return: Number of bytes written
+ """
+
+ if self.__fd < 0:
+ raise FlowNotAllocatedException()
+
+ if count is None:
+ return lib.flow_write(self.__fd, ffi.from_buffer(buf), len(buf))
+ else:
+ return lib.flow_write(self.__fd, ffi.from_buffer(buf), count)
+
+ def writeline(self,
+ ln: str) -> int:
+ """
+ Attempt to write a string to a flow
+
+ :param ln: String to write
+ :return: Number of bytes written
+ """
+
+ if self.__fd < 0:
+ raise FlowNotAllocatedException()
+
+ return self.write(ln.encode(), len(ln))
+
+ def read(self,
+ count: int = None) -> bytes:
+ """
+ Attempt to read bytes from a flow
+
+ :param count: Maximum number of bytes to read
+ :return: Bytes read
+ """
+
+ if self.__fd < 0:
+ raise FlowNotAllocatedException()
+
+ if count is None:
+ count = 2048
+
+ _buf = ffi.new("char []", count)
+
+ result = lib.flow_read(self.__fd, _buf, count)
+
+ return ffi.unpack(_buf, result)
+
+ def readline(self):
+ """
+
+ :return: A string
+ """
+ if self.__fd < 0:
+ raise FlowNotAllocatedException()
+
+ return self.read().decode()
+
+ # flow manipulation
+ def set_snd_timeout(self,
+ timeo: float):
+ """
+ Set the timeout for blocking writes
+ """
+ _timeo = _fl_to_timespec(timeo)
+
+ if lib.flow_set_snd_timout(self.__fd, _timeo) != 0:
+ raise FlowPermissionException()
+
+ def get_snd_timeout(self) -> float:
+ """
+ Get the timeout for blocking writes
+
+ :return: timeout for blocking writes
+ """
+ _timeo = ffi.new("struct timespec *")
+
+ if lib.flow_get_snd_timeout(self.__fd, _timeo) != 0:
+ raise FlowPermissionException()
+
+ return _timespec_to_fl(_timeo)
+
+ def set_rcv_timeout(self,
+ timeo: float):
+ """
+ Set the timeout for blocking writes
+ """
+ _timeo = _fl_to_timespec(timeo)
+
+ if lib.flow_set_rcv_timout(self.__fd, _timeo) != 0:
+ raise FlowPermissionException()
+
+ def get_rcv_timeout(self) -> float:
+ """
+ Get the timeout for blocking reads
+
+ :return: timeout for blocking writes
+ """
+ _timeo = ffi.new("struct timespec *")
+
+ if lib.flow_get_rcv_timeout(self.__fd, _timeo) != 0:
+ raise FlowPermissionException()
+
+ return _timespec_to_fl(_timeo)
+
+ def get_qos(self) -> QoSSpec:
+ """
+
+ :return: Current QoS on the flow
+ """
+ _qos = ffi.new("qosspec_t *")
+
+ if lib.flow_get_qos(self.__fd, _qos) != 0:
+ raise FlowPermissionException()
+
+ return _qosspec_to_qos(_qos)
+
+ def get_rx_queue_len(self) -> int:
+ """
+
+ :return:
+ """
+
+ size = ffi.new("size_t *")
+
+ if lib.flow_get_rx_qlen(self.__fd, size) != 0:
+ raise FlowPermissionException()
+
+ return int(size)
+
+ def get_tx_queue_len(self) -> int:
+ """
+
+ :return:
+ """
+
+ size = ffi.new("size_t *")
+
+ if lib.flow_get_tx_qlen(self.__fd, size) != 0:
+ raise FlowPermissionException()
+
+ return int(size)
+
+ def set_flags(self, flags: FlowProperties):
+ """
+ Set flags for this flow.
+ :param flags:
+ """
+
+ _flags = ffi.new("uint32_t *", int(flags))
+
+ if lib.flow_set_flag(self.__fd, _flags):
+ raise FlowPermissionException()
+
+ def get_flags(self) -> FlowProperties:
+ """
+ Get the flags for this flow
+ """
+
+ flags = lib.flow_get_flag(self.__fd)
+ if flags < 0:
+ raise FlowPermissionException()
+
+ return FlowProperties(int(flags))
+
+
+def flow_alloc(dst: str,
+ qos: QoSSpec = None,
+ timeo: float = None) -> Flow:
+ """
+
+ :param dst: Destination name
+ :param qos: Requested QoS
+ :param timeo: Timeout to wait for the allocation
+ :return: A new Flow()
+ """
+
+ f = Flow()
+ f.alloc(dst, qos, timeo)
+ return f
+
+
+def flow_accept(timeo: float = None) -> Flow:
+ """
+
+ :param timeo: Timeout to wait for the allocation
+ :return: A new Flow()
+ """
+
+ f = Flow()
+ f.accept(timeo)
+ return f
+
+
+def flow_join(dst: str,
+ qos: QoSSpec = None,
+ timeo: float = None) -> Flow:
+ """
+
+ :param dst: Broadcast layer name
+ :param qos: Requested QoS
+ :param timeo: Timeout to wait for the allocation
+ :return: A new Flow()
+ """
+
+ f = Flow()
+ f.join(dst, qos, timeo)
+ return f
+
+
diff --git a/ouroboros/event.py b/ouroboros/event.py
new file mode 100644
index 0000000..f7cb9f0
--- /dev/null
+++ b/ouroboros/event.py
@@ -0,0 +1,135 @@
+#
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# Python API for applications
+#
+# Dimitri Staessens <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# version 2.1 as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., http://www.fsf.org/about/contact/.
+#
+
+from ouroboros.dev import *
+from ouroboros.qos import _fl_to_timespec
+
+
+# async API
+class FlowEventError(Exception):
+ pass
+
+
+class FEventType(IntFlag):
+ FlowPkt = 1
+ FlowDown = 2
+ FlowUp = 4
+ FlowAlloc = 8
+ FlowDealloc = 16
+
+
+class FEventQueue:
+ """
+ A queue of events waiting to be handled
+ """
+
+ def __init__(self):
+ self.__fq = ffi.gc(lib.fqueue_create(), lib.fqueue_destroy)
+ if self.__fq is ffi.NULL:
+ raise MemoryError("Failed to create FEventQueue")
+
+ def next(self):
+ """
+ Get the next event
+ :return: Flow and eventtype on that flow
+ """
+ f = Flow()
+ f._Flow__fd = lib.fqueue_next(self.__fq)
+ if f._Flow__fd < 0:
+ raise FlowEventError
+
+ _type = lib.fqueue_type(self.__fq)
+ if _type < 0:
+ raise FlowEventError
+
+ return f, _type
+
+
+class FlowSet:
+ """
+ A set of flows that can be monitored for events
+ """
+
+ def __init__(self,
+ flows: [Flow] = None):
+ self.__set = ffi.gc(lib.fset_create(), lib.fset_destroy)
+ if self.__set is ffi.NULL:
+ raise MemoryError("Failed to create FlowSet")
+
+ if flows is not None:
+ for flow in flows:
+ if lib.fset_add(self.__set, flow._Flow__fd) != 0:
+ lib.fset_destroy(self.__set)
+ self.__set = ffi.NULL
+ raise MemoryError("Failed to add flow")
+
+ def add(self,
+ flow: Flow):
+ """
+ Add a Flow
+
+ :param flow: The flow object to add
+ """
+
+ if self.__set is ffi.NULL:
+ raise ValueError
+
+ if lib.fset_add(self.__set, flow._Flow___fd) != 0:
+ raise MemoryError("Failed to add flow")
+
+ def zero(self):
+ """
+ Remove all Flows from this set
+ """
+
+ if self.__set is ffi.NULL:
+ raise ValueError
+
+ lib.fset_zero(self.__set)
+
+ def remove(self,
+ flow: Flow):
+ """
+ Remove a flow from a set
+
+ :param flow:
+ """
+
+ if self.__set is ffi.NULL:
+ raise ValueError
+
+ lib.fset_del(self.__set, flow._Flow__fd)
+
+ def wait(self,
+ fq: FEventType,
+ timeo: float = None):
+ """
+ Wait for at least one event on one of the monitored flows
+ """
+
+ if self.__set is ffi.NULL:
+ raise ValueError
+
+ _timeo = _fl_to_timespec(timeo)
+
+ ret = lib.fevent(self.__set, fq._FEventQueue__fq, _timeo)
+ if ret < 0:
+ raise FlowEventError
diff --git a/ouroboros/qos.py b/ouroboros/qos.py
new file mode 100644
index 0000000..f437ee2
--- /dev/null
+++ b/ouroboros/qos.py
@@ -0,0 +1,110 @@
+#
+# Ouroboros - Copyright (C) 2016 - 2020
+#
+# Python API for applications - QoS
+#
+# Dimitri Staessens <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# version 2.1 as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., http://www.fsf.org/about/contact/.
+#
+
+from _ouroboros_cffi import ffi
+from math import modf
+from typing import Optional
+
+# Some constants
+MILLION = 1000 * 1000
+BILLION = 1000 * 1000 * 1000
+
+
+class QoSSpec:
+ """
+ delay: In ms, default 1000s
+ bandwidth: In bits / s, default 0
+ availability: Class of 9s, default 0
+ loss: Packet loss in ppm, default MILLION
+ ber: Bit error rate, errors per billion bits. default BILLION
+ in_order: In-order delivery, enables FRCT, default 0
+ max_gap: Maximum interruption in ms, default MILLION
+ cypher_s: Requested encryption strength in bits
+ """
+
+ def __init__(self,
+ delay: int = MILLION,
+ bandwidth: int = 0,
+ availability: int = 0,
+ loss: int = 1,
+ ber: int = MILLION,
+ in_order: int = 0,
+ max_gap: int = MILLION,
+ cypher_s: int = 0):
+ self.delay = delay
+ self.bandwidth = bandwidth
+ self.availability = availability
+ self.loss = loss
+ self.ber = ber
+ self.in_order = in_order
+ self.max_gap = max_gap
+ self.cypher_s = cypher_s
+
+
+def _fl_to_timespec(timeo: float):
+ if timeo is None:
+ return ffi.NULL
+ elif timeo <= 0:
+ return ffi.new("struct timespec *", [0, 0])
+ else:
+ frac, whole = modf(timeo)
+ _timeo = ffi.new("struct timespec *")
+ _timeo.tv_sec = whole
+ _timeo.tv_nsec = frac * BILLION
+ return _timeo
+
+
+def _timespec_to_fl(_timeo) -> Optional[float]:
+ if _timeo is ffi.NULL:
+ return None
+ elif _timeo.tv_sec <= 0 and _timeo.tv_nsec == 0:
+ return 0
+ else:
+ return _timeo.tv_sec + _timeo.tv_nsec / BILLION
+
+
+def _qos_to_qosspec(qos: QoSSpec):
+ if qos is None:
+ return ffi.NULL
+ else:
+ return ffi.new("qosspec_t *",
+ [qos.delay,
+ qos.bandwidth,
+ qos.availability,
+ qos.loss,
+ qos.ber,
+ qos.in_order,
+ qos.max_gap,
+ qos.cypher_s])
+
+
+def _qosspec_to_qos(_qos) -> Optional[QoSSpec]:
+ if _qos is ffi.NULL:
+ return None
+ else:
+ return QoSSpec(delay=_qos.delay,
+ bandwidth=_qos.bandwidth,
+ availability=_qos.availability,
+ loss=_qos.loss,
+ ber=_qos.ber,
+ in_order=_qos.in_order,
+ max_gap=_qos.max_gap,
+ cypher_s=_qos.cypher_s)
diff --git a/setup.py b/setup.py
new file mode 100755
index 0000000..023f3b4
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import setuptools
+
+setuptools.setup(
+ name='PyOuroboros',
+ version=0.17,
+ url='https://ouroboros.rocks',
+ keywords='ouroboros IPC subsystem',
+ author='Dimitri Staessens',
+ author_email='[email protected]',
+ license='LGPLv2.1',
+ description='Python API for Ouroboros',
+ packages=[
+ 'ouroboros'
+ ],
+ setup_requires=[
+ "cffi>=1.0.0"
+ ],
+ cffi_modules=[
+ "ffi/pyouroboros_build.py:ffibuilder"
+ ],
+ install_requires=[
+ "cffi>=1.0.0"
+ ])