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2,635 rfc3489.txt

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2,496 stun.cxx

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355 stun.h
@@ -0,0 +1,355 @@
#ifndef STUN_H
#define STUN_H

#include <iostream>
#include <time.h>

// if you change this version, change in makefile too
#define STUN_VERSION "0.97"

#define STUN_MAX_STRING 256
#define STUN_MAX_UNKNOWN_ATTRIBUTES 8
#define STUN_MAX_MESSAGE_SIZE 2048

#define STUN_PORT 3478

// define some basic types
typedef unsigned char UInt8;
typedef unsigned short UInt16;
typedef unsigned int UInt32;
#if defined( WIN32 )
typedef unsigned __int64 UInt64;
#else
typedef unsigned long long UInt64;
#endif
typedef struct { unsigned char octet[16]; } UInt128;

/// define a structure to hold a stun address
const UInt8 IPv4Family = 0x01;
const UInt8 IPv6Family = 0x02;

// define flags
const UInt32 ChangeIpFlag = 0x04;
const UInt32 ChangePortFlag = 0x02;

// define stun attribute
const UInt16 MappedAddress = 0x0001;
const UInt16 ResponseAddress = 0x0002;
const UInt16 ChangeRequest = 0x0003;
const UInt16 SourceAddress = 0x0004;
const UInt16 ChangedAddress = 0x0005;
const UInt16 Username = 0x0006;
const UInt16 Password = 0x0007;
const UInt16 MessageIntegrity = 0x0008;
const UInt16 ErrorCode = 0x0009;
const UInt16 UnknownAttribute = 0x000A;
const UInt16 ReflectedFrom = 0x000B;
const UInt16 XorMappedAddress = 0x8020;
const UInt16 XorOnly = 0x0021;
const UInt16 ServerName = 0x8022;
const UInt16 SecondaryAddress = 0x8050; // Non standard extention

// define types for a stun message
const UInt16 BindRequestMsg = 0x0001;
const UInt16 BindResponseMsg = 0x0101;
const UInt16 BindErrorResponseMsg = 0x0111;
const UInt16 SharedSecretRequestMsg = 0x0002;
const UInt16 SharedSecretResponseMsg = 0x0102;
const UInt16 SharedSecretErrorResponseMsg = 0x0112;

typedef struct
{
UInt16 msgType;
UInt16 msgLength;
UInt128 id;
} StunMsgHdr;


typedef struct
{
UInt16 type;
UInt16 length;
} StunAtrHdr;

typedef struct
{
UInt16 port;
UInt32 addr;
} StunAddress4;

typedef struct
{
UInt8 pad;
UInt8 family;
StunAddress4 ipv4;
} StunAtrAddress4;

typedef struct
{
UInt32 value;
} StunAtrChangeRequest;

typedef struct
{
UInt16 pad; // all 0
UInt8 errorClass;
UInt8 number;
char reason[STUN_MAX_STRING];
UInt16 sizeReason;
} StunAtrError;

typedef struct
{
UInt16 attrType[STUN_MAX_UNKNOWN_ATTRIBUTES];
UInt16 numAttributes;
} StunAtrUnknown;

typedef struct
{
char value[STUN_MAX_STRING];
UInt16 sizeValue;
} StunAtrString;

typedef struct
{
char hash[20];
} StunAtrIntegrity;

typedef enum
{
HmacUnkown=0,
HmacOK,
HmacBadUserName,
HmacUnkownUserName,
HmacFailed,
} StunHmacStatus;

typedef struct
{
StunMsgHdr msgHdr;

bool hasMappedAddress;
StunAtrAddress4 mappedAddress;

bool hasResponseAddress;
StunAtrAddress4 responseAddress;

bool hasChangeRequest;
StunAtrChangeRequest changeRequest;

bool hasSourceAddress;
StunAtrAddress4 sourceAddress;

bool hasChangedAddress;
StunAtrAddress4 changedAddress;

bool hasUsername;
StunAtrString username;

bool hasPassword;
StunAtrString password;

bool hasMessageIntegrity;
StunAtrIntegrity messageIntegrity;

bool hasErrorCode;
StunAtrError errorCode;

bool hasUnknownAttributes;
StunAtrUnknown unknownAttributes;

bool hasReflectedFrom;
StunAtrAddress4 reflectedFrom;

bool hasXorMappedAddress;
StunAtrAddress4 xorMappedAddress;

bool xorOnly;

bool hasServerName;
StunAtrString serverName;

bool hasSecondaryAddress;
StunAtrAddress4 secondaryAddress;
} StunMessage;


// Define enum with different types of NAT
typedef enum
{
StunTypeUnknown=0,
StunTypeFailure,
StunTypeOpen,
StunTypeBlocked,

StunTypeIndependentFilter,
StunTypeDependentFilter,
StunTypePortDependedFilter,
StunTypeDependentMapping,

//StunTypeConeNat,
//StunTypeRestrictedNat,
//StunTypePortRestrictedNat,
//StunTypeSymNat,

StunTypeFirewall,
} NatType;

#ifdef WIN32
typedef SOCKET Socket;
#else
typedef int Socket;
#endif

#define MAX_MEDIA_RELAYS 500
#define MAX_RTP_MSG_SIZE 1500
#define MEDIA_RELAY_TIMEOUT 3*60

typedef struct
{
int relayPort; // media relay port
int fd; // media relay file descriptor
StunAddress4 destination; // NAT IP:port
time_t expireTime; // if no activity after time, close the socket
} StunMediaRelay;

typedef struct
{
StunAddress4 myAddr;
StunAddress4 altAddr;
Socket myFd;
Socket altPortFd;
Socket altIpFd;
Socket altIpPortFd;
bool relay; // true if media relaying is to be done
StunMediaRelay relays[MAX_MEDIA_RELAYS];
} StunServerInfo;

bool
stunParseMessage( char* buf,
unsigned int bufLen,
StunMessage& message,
bool verbose );

void
stunBuildReqSimple( StunMessage* msg,
const StunAtrString& username,
bool changePort, bool changeIp, unsigned int id=0 );

unsigned int
stunEncodeMessage( const StunMessage& message,
char* buf,
unsigned int bufLen,
const StunAtrString& password,
bool verbose);

void
stunCreateUserName(const StunAddress4& addr, StunAtrString* username);

void
stunGetUserNameAndPassword( const StunAddress4& dest,
StunAtrString* username,
StunAtrString* password);

void
stunCreatePassword(const StunAtrString& username, StunAtrString* password);

int
stunRand();

UInt64
stunGetSystemTimeSecs();

/// find the IP address of a the specified stun server - return false is fails parse
bool
stunParseServerName( char* serverName, StunAddress4& stunServerAddr);

bool
stunParseHostName( char* peerName,
UInt32& ip,
UInt16& portVal,
UInt16 defaultPort );

/// return true if all is OK
/// Create a media relay and do the STERN thing if startMediaPort is non-zero
bool
stunInitServer(StunServerInfo& info,
const StunAddress4& myAddr,
const StunAddress4& altAddr,
int startMediaPort,
bool verbose);

void
stunStopServer(StunServerInfo& info);

/// return true if all is OK
bool
stunServerProcess(StunServerInfo& info, bool verbose);

/// returns number of address found - take array or addres
int
stunFindLocalInterfaces(UInt32* addresses, int maxSize );

void
stunTest( StunAddress4& dest, int testNum, bool verbose, StunAddress4* srcAddr=0 );

NatType
stunNatType( StunAddress4& dest, bool verbose,
bool* preservePort=0, // if set, is return for if NAT preservers ports or not
bool* hairpin=0 , // if set, is the return for if NAT will hairpin packets
int port=0, // port to use for the test, 0 to choose random port
StunAddress4* sAddr=0 // NIC to use
);

/// prints a StunAddress
std::ostream&
operator<<( std::ostream& strm, const StunAddress4& addr);

std::ostream&
operator<< ( std::ostream& strm, const UInt128& );


bool
stunServerProcessMsg( char* buf,
unsigned int bufLen,
StunAddress4& from,
StunAddress4& myAddr,
StunAddress4& altAddr,
StunMessage* resp,
StunAddress4* destination,
StunAtrString* hmacPassword,
bool* changePort,
bool* changeIp,
bool verbose);

int
stunOpenSocket( StunAddress4& dest,
StunAddress4* mappedAddr,
int port=0,
StunAddress4* srcAddr=0,
bool verbose=false );

bool
stunOpenSocketPair( StunAddress4& dest, StunAddress4* mappedAddr,
int* fd1, int* fd2,
int srcPort=0, StunAddress4* srcAddr=0,
bool verbose=false);

int
stunRandomPort();

#endif


/* ====================================================================
* The Vovida Software License, Version 1.0 * * Copyright (c) 2000 Vovida Networks, Inc. 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. * * 3. The names "VOCAL", "Vovida Open Communication Application Library", * and "Vovida Open Communication Application Library (VOCAL)" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact vocal@vovida.org. * * 4. Products derived from this software may not be called "VOCAL", nor * may "VOCAL" appear in their name, without prior written * permission of Vovida Networks, Inc. * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES * IN EXCESS OF $1,000, NOR FOR ANY 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. * * ==================================================================== * * This software consists of voluntary contributions made by Vovida * Networks, Inc. and many individuals on behalf of Vovida Networks, * Inc. For more information on Vovida Networks, Inc., please see * <http://www.vovida.org/>.
*
*/

// Local Variables:
// mode:c++
// c-file-style:"ellemtel"
// c-file-offsets:((case-label . +))
// indent-tabs-mode:nil
// End:

Empty file.
@@ -0,0 +1 @@
ref: refs/heads/master
@@ -0,0 +1,6 @@
[core]
repositoryformatversion = 0
filemode = true
bare = true
[remote "origin"]
url = https://github.com/agentgoblin/stunagmon
@@ -0,0 +1 @@
Unnamed repository; edit this file 'description' to name the repository.
@@ -0,0 +1,15 @@
#!/bin/sh
#
# An example hook script to check the commit log message taken by
# applypatch from an e-mail message.
#
# The hook should exit with non-zero status after issuing an
# appropriate message if it wants to stop the commit. The hook is
# allowed to edit the commit message file.
#
# To enable this hook, rename this file to "applypatch-msg".

. git-sh-setup
test -x "$GIT_DIR/hooks/commit-msg" &&
exec "$GIT_DIR/hooks/commit-msg" ${1+"$@"}
:
@@ -0,0 +1,24 @@
#!/bin/sh
#
# An example hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message. The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit. The hook is allowed to edit the commit message file.
#
# To enable this hook, rename this file to "commit-msg".

# Uncomment the below to add a Signed-off-by line to the message.
# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
# hook is more suited to it.
#
# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

# This example catches duplicate Signed-off-by lines.

test "" = "$(grep '^Signed-off-by: ' "$1" |
sort | uniq -c | sed -e '/^[ ]*1[ ]/d')" || {
echo >&2 Duplicate Signed-off-by lines.
exit 1
}
@@ -0,0 +1,8 @@
#!/bin/sh
#
# An example hook script to prepare a packed repository for use over
# dumb transports.
#
# To enable this hook, rename this file to "post-update".

exec git update-server-info
@@ -0,0 +1,14 @@
#!/bin/sh
#
# An example hook script to verify what is about to be committed
# by applypatch from an e-mail message.
#
# The hook should exit with non-zero status after issuing an
# appropriate message if it wants to stop the commit.
#
# To enable this hook, rename this file to "pre-applypatch".

. git-sh-setup
test -x "$GIT_DIR/hooks/pre-commit" &&
exec "$GIT_DIR/hooks/pre-commit" ${1+"$@"}
:
@@ -0,0 +1,49 @@
#!/bin/sh
#
# An example hook script to verify what is about to be committed.
# Called by "git commit" with no arguments. The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# To enable this hook, rename this file to "pre-commit".

if git rev-parse --verify HEAD >/dev/null 2>&1
then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# If you want to allow non-ASCII filenames set this variable to true.
allownonascii=$(git config --bool hooks.allownonascii)

# Redirect output to stderr.
exec 1>&2

# Cross platform projects tend to avoid non-ASCII filenames; prevent
# them from being added to the repository. We exploit the fact that the
# printable range starts at the space character and ends with tilde.
if [ "$allownonascii" != "true" ] &&
# Note that the use of brackets around a tr range is ok here, (it's
# even required, for portability to Solaris 10's /usr/bin/tr), since
# the square bracket bytes happen to fall in the designated range.
test $(git diff --cached --name-only --diff-filter=A -z $against |
LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
then
cat <<\EOF
Error: Attempt to add a non-ASCII file name.
This can cause problems if you want to work with people on other platforms.
To be portable it is advisable to rename the file.
If you know what you are doing you can disable this check using:
git config hooks.allownonascii true
EOF
exit 1
fi

# If there are whitespace errors, print the offending file names and fail.
exec git diff-index --check --cached $against --
@@ -0,0 +1,54 @@
#!/bin/sh

# An example hook script to verify what is about to be pushed. Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed. If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
# <local ref> <local sha1> <remote ref> <remote sha1>
#
# This sample shows how to prevent push of commits where the log message starts
# with "WIP" (work in progress).

remote="$1"
url="$2"

z40=0000000000000000000000000000000000000000

IFS=' '
while read local_ref local_sha remote_ref remote_sha
do
if [ "$local_sha" = $z40 ]
then
# Handle delete
:
else
if [ "$remote_sha" = $z40 ]
then
# New branch, examine all commits
range="$local_sha"
else
# Update to existing branch, examine new commits
range="$remote_sha..$local_sha"
fi

# Check for WIP commit
commit=`git rev-list -n 1 --grep '^WIP' "$range"`
if [ -n "$commit" ]
then
echo "Found WIP commit in $local_ref, not pushing"
exit 1
fi
fi
done

exit 0
@@ -0,0 +1,169 @@
#!/bin/sh
#
# Copyright (c) 2006, 2008 Junio C Hamano
#
# The "pre-rebase" hook is run just before "git rebase" starts doing
# its job, and can prevent the command from running by exiting with
# non-zero status.
#
# The hook is called with the following parameters:
#
# $1 -- the upstream the series was forked from.
# $2 -- the branch being rebased (or empty when rebasing the current branch).
#
# This sample shows how to prevent topic branches that are already
# merged to 'next' branch from getting rebased, because allowing it
# would result in rebasing already published history.

publish=next
basebranch="$1"
if test "$#" = 2
then
topic="refs/heads/$2"
else
topic=`git symbolic-ref HEAD` ||
exit 0 ;# we do not interrupt rebasing detached HEAD
fi

case "$topic" in
refs/heads/??/*)
;;
*)
exit 0 ;# we do not interrupt others.
;;
esac

# Now we are dealing with a topic branch being rebased
# on top of master. Is it OK to rebase it?

# Does the topic really exist?
git show-ref -q "$topic" || {
echo >&2 "No such branch $topic"
exit 1
}

# Is topic fully merged to master?
not_in_master=`git rev-list --pretty=oneline ^master "$topic"`
if test -z "$not_in_master"
then
echo >&2 "$topic is fully merged to master; better remove it."
exit 1 ;# we could allow it, but there is no point.
fi

# Is topic ever merged to next? If so you should not be rebasing it.
only_next_1=`git rev-list ^master "^$topic" ${publish} | sort`
only_next_2=`git rev-list ^master ${publish} | sort`
if test "$only_next_1" = "$only_next_2"
then
not_in_topic=`git rev-list "^$topic" master`
if test -z "$not_in_topic"
then
echo >&2 "$topic is already up-to-date with master"
exit 1 ;# we could allow it, but there is no point.
else
exit 0
fi
else
not_in_next=`git rev-list --pretty=oneline ^${publish} "$topic"`
/usr/bin/perl -e '
my $topic = $ARGV[0];
my $msg = "* $topic has commits already merged to public branch:\n";
my (%not_in_next) = map {
/^([0-9a-f]+) /;
($1 => 1);
} split(/\n/, $ARGV[1]);
for my $elem (map {
/^([0-9a-f]+) (.*)$/;
[$1 => $2];
} split(/\n/, $ARGV[2])) {
if (!exists $not_in_next{$elem->[0]}) {
if ($msg) {
print STDERR $msg;
undef $msg;
}
print STDERR " $elem->[1]\n";
}
}
' "$topic" "$not_in_next" "$not_in_master"
exit 1
fi

<<\DOC_END
This sample hook safeguards topic branches that have been
published from being rewound.
The workflow assumed here is:
* Once a topic branch forks from "master", "master" is never
merged into it again (either directly or indirectly).
* Once a topic branch is fully cooked and merged into "master",
it is deleted. If you need to build on top of it to correct
earlier mistakes, a new topic branch is created by forking at
the tip of the "master". This is not strictly necessary, but
it makes it easier to keep your history simple.
* Whenever you need to test or publish your changes to topic
branches, merge them into "next" branch.
The script, being an example, hardcodes the publish branch name
to be "next", but it is trivial to make it configurable via
$GIT_DIR/config mechanism.
With this workflow, you would want to know:
(1) ... if a topic branch has ever been merged to "next". Young
topic branches can have stupid mistakes you would rather
clean up before publishing, and things that have not been
merged into other branches can be easily rebased without
affecting other people. But once it is published, you would
not want to rewind it.
(2) ... if a topic branch has been fully merged to "master".
Then you can delete it. More importantly, you should not
build on top of it -- other people may already want to
change things related to the topic as patches against your
"master", so if you need further changes, it is better to
fork the topic (perhaps with the same name) afresh from the
tip of "master".
Let's look at this example:
o---o---o---o---o---o---o---o---o---o "next"
/ / / /
/ a---a---b A / /
/ / / /
/ / c---c---c---c B /
/ / / \ /
/ / / b---b C \ /
/ / / / \ /
---o---o---o---o---o---o---o---o---o---o---o "master"
A, B and C are topic branches.
* A has one fix since it was merged up to "next".
* B has finished. It has been fully merged up to "master" and "next",
and is ready to be deleted.
* C has not merged to "next" at all.
We would want to allow C to be rebased, refuse A, and encourage
B to be deleted.
To compute (1):
git rev-list ^master ^topic next
git rev-list ^master next
if these match, topic has not merged in next at all.
To compute (2):
git rev-list master..topic
if this is empty, it is fully merged to "master".
DOC_END
@@ -0,0 +1,36 @@
#!/bin/sh
#
# An example hook script to prepare the commit log message.
# Called by "git commit" with the name of the file that has the
# commit message, followed by the description of the commit
# message's source. The hook's purpose is to edit the commit
# message file. If the hook fails with a non-zero status,
# the commit is aborted.
#
# To enable this hook, rename this file to "prepare-commit-msg".

# This hook includes three examples. The first comments out the
# "Conflicts:" part of a merge commit.
#
# The second includes the output of "git diff --name-status -r"
# into the message, just before the "git status" output. It is
# commented because it doesn't cope with --amend or with squashed
# commits.
#
# The third example adds a Signed-off-by line to the message, that can
# still be edited. This is rarely a good idea.

case "$2,$3" in
merge,)
/usr/bin/perl -i.bak -ne 's/^/# /, s/^# #/#/ if /^Conflicts/ .. /#/; print' "$1" ;;

# ,|template,)
# /usr/bin/perl -i.bak -pe '
# print "\n" . `git diff --cached --name-status -r`
# if /^#/ && $first++ == 0' "$1" ;;

*) ;;
esac

# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
@@ -0,0 +1,128 @@
#!/bin/sh
#
# An example hook script to blocks unannotated tags from entering.
# Called by "git receive-pack" with arguments: refname sha1-old sha1-new
#
# To enable this hook, rename this file to "update".
#
# Config
# ------
# hooks.allowunannotated
# This boolean sets whether unannotated tags will be allowed into the
# repository. By default they won't be.
# hooks.allowdeletetag
# This boolean sets whether deleting tags will be allowed in the
# repository. By default they won't be.
# hooks.allowmodifytag
# This boolean sets whether a tag may be modified after creation. By default
# it won't be.
# hooks.allowdeletebranch
# This boolean sets whether deleting branches will be allowed in the
# repository. By default they won't be.
# hooks.denycreatebranch
# This boolean sets whether remotely creating branches will be denied
# in the repository. By default this is allowed.
#

# --- Command line
refname="$1"
oldrev="$2"
newrev="$3"

# --- Safety check
if [ -z "$GIT_DIR" ]; then
echo "Don't run this script from the command line." >&2
echo " (if you want, you could supply GIT_DIR then run" >&2
echo " $0 <ref> <oldrev> <newrev>)" >&2
exit 1
fi

if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
echo "usage: $0 <ref> <oldrev> <newrev>" >&2
exit 1
fi

# --- Config
allowunannotated=$(git config --bool hooks.allowunannotated)
allowdeletebranch=$(git config --bool hooks.allowdeletebranch)
denycreatebranch=$(git config --bool hooks.denycreatebranch)
allowdeletetag=$(git config --bool hooks.allowdeletetag)
allowmodifytag=$(git config --bool hooks.allowmodifytag)

# check for no description
projectdesc=$(sed -e '1q' "$GIT_DIR/description")
case "$projectdesc" in
"Unnamed repository"* | "")
echo "*** Project description file hasn't been set" >&2
exit 1
;;
esac

# --- Check types
# if $newrev is 0000...0000, it's a commit to delete a ref.
zero="0000000000000000000000000000000000000000"
if [ "$newrev" = "$zero" ]; then
newrev_type=delete
else
newrev_type=$(git cat-file -t $newrev)
fi

case "$refname","$newrev_type" in
refs/tags/*,commit)
# un-annotated tag
short_refname=${refname##refs/tags/}
if [ "$allowunannotated" != "true" ]; then
echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
exit 1
fi
;;
refs/tags/*,delete)
# delete tag
if [ "$allowdeletetag" != "true" ]; then
echo "*** Deleting a tag is not allowed in this repository" >&2
exit 1
fi
;;
refs/tags/*,tag)
# annotated tag
if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
then
echo "*** Tag '$refname' already exists." >&2
echo "*** Modifying a tag is not allowed in this repository." >&2
exit 1
fi
;;
refs/heads/*,commit)
# branch
if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
echo "*** Creating a branch is not allowed in this repository" >&2
exit 1
fi
;;
refs/heads/*,delete)
# delete branch
if [ "$allowdeletebranch" != "true" ]; then
echo "*** Deleting a branch is not allowed in this repository" >&2
exit 1
fi
;;
refs/remotes/*,commit)
# tracking branch
;;
refs/remotes/*,delete)
# delete tracking branch
if [ "$allowdeletebranch" != "true" ]; then
echo "*** Deleting a tracking branch is not allowed in this repository" >&2
exit 1
fi
;;
*)
# Anything else (is there anything else?)
echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
exit 1
;;
esac

# --- Finished
exit 0
@@ -0,0 +1,6 @@
# git ls-files --others --exclude-from=.git/info/exclude
# Lines that start with '#' are comments.
# For a project mostly in C, the following would be a good set of
# exclude patterns (uncomment them if you want to use them):
# *.[oa]
# *~
Binary file not shown.
Binary file not shown.
Binary file not shown.
@@ -0,0 +1,2 @@
# pack-refs with: peeled fully-peeled
808c8b59821fae4f8ce6a4f8ddacae5642fdce9d refs/heads/master
349 udp.cxx
@@ -0,0 +1,349 @@
#include <cassert>
#include <cstdio>
#include <cstring>
#include <errno.h>
#include <iostream>
#include <cstdlib>
#include <time.h>

#ifdef WIN32

#include <winsock2.h>
#include <stdlib.h>
#include <io.h>

#else

#include <arpa/inet.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netdb.h>
#include <string.h>
#include <unistd.h>

#endif

#include <string.h>

#include "udp.h"

using namespace std;


Socket
openPort( unsigned short port, unsigned int interfaceIp, bool verbose )
{
Socket fd;

fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
if ( fd == INVALID_SOCKET )
{
int err = getErrno();
cerr << "Could not create a UDP socket:" << err << endl;
return INVALID_SOCKET;
}

struct sockaddr_in addr;
memset((char*) &(addr),0, sizeof((addr)));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons(port);

if ( (interfaceIp != 0) &&
( interfaceIp != 0x100007f ) )
{
addr.sin_addr.s_addr = htonl(interfaceIp);
if (verbose )
{
clog << "Binding to interface "
<< hex << "0x" << htonl(interfaceIp) << dec << endl;
}
}

if ( bind( fd,(struct sockaddr*)&addr, sizeof(addr)) != 0 )
{
int e = getErrno();

switch (e)
{
case 0:
{
cerr << "Could not bind socket" << endl;
return INVALID_SOCKET;
}
case EADDRINUSE:
{
cerr << "Port " << port << " for receiving UDP is in use" << endl;
return INVALID_SOCKET;
}
break;
case EADDRNOTAVAIL:
{
if ( verbose )
{
cerr << "Cannot assign requested address" << endl;
}
return INVALID_SOCKET;
}
break;
default:
{
cerr << "Could not bind UDP receive port"
<< "Error=" << e << " " << strerror(e) << endl;
return INVALID_SOCKET;
}
break;
}
}
if ( verbose )
{
clog << "Opened port " << port << " with fd " << fd << endl;
}

assert( fd != INVALID_SOCKET );

return fd;
}


bool
getMessage( Socket fd, char* buf, int* len,
unsigned int* srcIp, unsigned short* srcPort,
bool verbose)
{
assert( fd != INVALID_SOCKET );

int originalSize = *len;
assert( originalSize > 0 );

struct sockaddr_in from;
int fromLen = sizeof(from);

*len = recvfrom(fd,
buf,
originalSize,
0,
(struct sockaddr *)&from,
(socklen_t*)&fromLen);

if ( *len == SOCKET_ERROR )
{
int err = getErrno();

switch (err)
{
case ENOTSOCK:
cerr << "Error fd not a socket" << endl;
break;
case ECONNRESET:
cerr << "Error connection reset - host not reachable" << endl;
break;

default:
cerr << "Socket Error=" << err << endl;
}

return false;
}

if ( *len < 0 )
{
clog << "socket closed? negative len" << endl;
return false;
}

if ( *len == 0 )
{
clog << "socket closed? zero len" << endl;
return false;
}

*srcPort = ntohs(from.sin_port);
*srcIp = ntohl(from.sin_addr.s_addr);

if ( (*len)+1 >= originalSize )
{
if (verbose)
{
clog << "Received a message that was too large" << endl;
}
return false;
}
buf[*len]=0;

return true;
}


bool
sendMessage( Socket fd, char* buf, int l,
unsigned int dstIp, unsigned short dstPort,
bool verbose)
{
assert( fd != INVALID_SOCKET );

int s;
if ( dstPort == 0 )
{
// sending on a connected port
assert( dstIp == 0 );

s = send(fd,buf,l,0);
}
else
{
assert( dstIp != 0 );
assert( dstPort != 0 );

struct sockaddr_in to;
int toLen = sizeof(to);
memset(&to,0,toLen);

to.sin_family = AF_INET;
to.sin_port = htons(dstPort);
to.sin_addr.s_addr = htonl(dstIp);

s = sendto(fd, buf, l, 0,(sockaddr*)&to, toLen);
}

if ( s == SOCKET_ERROR )
{
int e = getErrno();
switch (e)
{
case ECONNREFUSED:
case EHOSTDOWN:
case EHOSTUNREACH:
{
// quietly ignore this
}
break;
case EAFNOSUPPORT:
{
cerr << "err EAFNOSUPPORT in send" << endl;
}
break;
default:
{
cerr << "err " << e << " " << strerror(e) << " in send" << endl;
}
}
return false;
}

if ( s == 0 )
{
cerr << "no data sent in send" << endl;
return false;
}

if ( s != l )
{
if (verbose)
{
cerr << "only " << s << " out of " << l << " bytes sent" << endl;
}
return false;
}

return true;
}


void
initNetwork()
{
#ifdef WIN32
WORD wVersionRequested = MAKEWORD( 2, 2 );
WSADATA wsaData;
int err;

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
// could not find a usable WinSock DLL
cerr << "Could not load winsock" << endl;
assert(0); // is this is failing, try a different version that 2.2, 1.0 or later will likely work
exit(1);
}

/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */

if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 )
{
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup( );
cerr << "Bad winsock verion" << endl;
assert(0); // is this is failing, try a different version that 2.2, 1.0 or later will likely work
exit(1);
}
#endif
}


/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. 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.
*
* 3. The names "VOCAL", "Vovida Open Communication Application Library",
* and "Vovida Open Communication Application Library (VOCAL)" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
* may "VOCAL" appear in their name, without prior written
* permission of Vovida Networks, Inc.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY 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.
*
* ====================================================================
*
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc. For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/

// Local Variables:
// mode:c++
// c-file-style:"ellemtel"
// c-file-offsets:((case-label . +))
// indent-tabs-mode:nil
// End:
156 udp.h
@@ -0,0 +1,156 @@
#ifndef udp_h
#define udp_h


#ifdef __MACH__
typedef int socklen_t;
#endif

#include <errno.h>

#ifdef WIN32

#include <winsock2.h>
#include <io.h>

typedef int socklen_t;
typedef SOCKET Socket;

#define EWOULDBLOCK WSAEWOULDBLOCK
#define EINPROGRESS WSAEINPROGRESS
#define EALREADY WSAEALREADY
#define ENOTSOCK WSAENOTSOCK
#define EDESTADDRREQ WSAEDESTADDRREQ
#define EMSGSIZE WSAEMSGSIZE
#define EPROTOTYPE WSAEPROTOTYPE
#define ENOPROTOOPT WSAENOPROTOOPT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
#define EOPNOTSUPP WSAEOPNOTSUPP
#define EPFNOSUPPORT WSAEPFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#define EADDRINUSE WSAEADDRINUSE
#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
#define ENETDOWN WSAENETDOWN
#define ENETUNREACH WSAENETUNREACH
#define ENETRESET WSAENETRESET
#define ECONNABORTED WSAECONNABORTED
#define ECONNRESET WSAECONNRESET
#define ENOBUFS WSAENOBUFS
#define EISCONN WSAEISCONN
#define ENOTCONN WSAENOTCONN
#define ESHUTDOWN WSAESHUTDOWN
#define ETOOMANYREFS WSAETOOMANYREFS
#define ETIMEDOUT WSAETIMEDOUT
#define ECONNREFUSED WSAECONNREFUSED
#define ELOOP WSAELOOP
#define EHOSTDOWN WSAEHOSTDOWN
#define EHOSTUNREACH WSAEHOSTUNREACH
#define EPROCLIM WSAEPROCLIM
#define EUSERS WSAEUSERS
#define EDQUOT WSAEDQUOT
#define ESTALE WSAESTALE
#define EREMOTE WSAEREMOTE

typedef LONGLONG Int64;
inline int getErrno() { return WSAGetLastError(); }

#else

typedef int Socket;
static const Socket INVALID_SOCKET = -1;
static const int SOCKET_ERROR = -1;

inline int closesocket( Socket fd ) { return close(fd); };

inline int getErrno() { return errno; }

#define WSANOTINITIALISED EPROTONOSUPPORT

#endif

/// Open a UDP socket to receive on the given port - if port is 0, pick a a
/// port, if interfaceIp!=0 then use ONLY the interface specified instead of
/// all of them
Socket
openPort( unsigned short port, unsigned int interfaceIp,
bool verbose);


/// recive a UDP message
bool
getMessage( Socket fd, char* buf, int* len,
unsigned int* srcIp, unsigned short* srcPort,
bool verbose);


/// send a UDP message
bool
sendMessage( Socket fd, char* msg, int len,
unsigned int dstIp, unsigned short dstPort,
bool verbose);


/// set up network - does nothing in unix but needed for windows
void
initNetwork();


/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. 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.
*
* 3. The names "VOCAL", "Vovida Open Communication Application Library",
* and "Vovida Open Communication Application Library (VOCAL)" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
* may "VOCAL" appear in their name, without prior written
* permission of Vovida Networks, Inc.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY 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.
*
* ====================================================================
*
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc. For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/

// Local Variables:
// mode:c++
// c-file-style:"ellemtel"
// c-file-offsets:((case-label . +))
// indent-tabs-mode:nil
// End:

#endif