flag = {
    name        = tcpedit;
    documentation;
    lib-name    = tcpedit;
};

flag = {
    name        = portmap;
    value       = r;
    arg-type    = string;
    max         = 1;
    descrip     = "Rewrite TCP/UDP ports";
    doc         = <<- EOText
Specify a list of comma delimited port mappingings consisting of 
colon delimited port number pairs.  Each colon delimited port pair
consists of the port to match followed by the port number to rewrite.

Example:
@example
--portmap=80:8000,8080:80
@end example
EOText;
};

flag = {
    name        = seed;
    value       = s;
    arg-type    = number;
    descrip     = "Randomize src/dst IPv4/v6 addresses w/ given seed";
    max         = 1;
    doc         = <<- EOText
Causes the source and destination IPv4/v6 addresses to be pseudo 
randomized but still maintain client/server relationships.
Since the randomization is deterministic based on the seed, 
you can reuse the same seed value to recreate the traffic.
EOText; 
};

flag = {
    name        = pnat;
    value       = N;
    arg-type    = string;
    max         = 2;
    stack-arg;
    flags-cant  = srcipmap;
    flass-cant  = dstipmap;
    descrip     = "Rewrite IPv4/v6 addresses using pseudo-NAT";
    doc         = <<- EOText
Takes a comma delimited series of colon delimited CIDR
netblock pairs.  Each netblock pair is evaluated in order against
the IP addresses.  If the IP address in the packet matches the
first netblock, it is rewriten using the second netblock as a
mask against the high order bits.

IPv4 Example:
@example
--pnat=192.168.0.0/16:10.77.0.0/16,172.16.0.0/12:10.1.0.0/24
@end example
IPv6 Example:
@example
--pnat=[2001:db8::/32]:[dead::/16],[2001:db8::/32]:[::ffff:0:0/96]
@end example
EOText; 
};

flag = {
    name        = srcipmap;
    value       = S;
    arg-type    = string;
    max         = 1;
    flags-cant  = pnat;
    descrip     = "Rewrite source IPv4/v6 addresses using pseudo-NAT";
    doc         = <<- EOText
Works just like the --pnat option, but only affects the source IP
addresses in the IPv4/v6 header.
EOText;
};

flag = {
    name        = dstipmap;
    value       = D;
    arg-type    = string;
    max         = 1;
    flags-cant  = pnat;
    descrip     = "Rewrite destination IPv4/v6 addresses using pseudo-NAT";
    doc         = <<- EOText
Works just like the --pnat option, but only affects the destination IP
addresses in the IPv4/v6 header.
EOText;
};


flag = {
	ifdef 		= HAVE_CACHEFILE_SUPPORT;
    name        = endpoints;
    value       = e;
    arg-type    = string;
    max         = 1;
    flags-must  = cachefile;
    descrip     = "Rewrite IP addresses to be between two endpoints";
    doc         = <<- EOText
Takes a pair of colon delimited IPv4/v6 addresses which will be used to rewrite
all traffic to appear to be between the two IP's.

IPv4 Example:
@example
--endpoints=172.16.0.1:172.16.0.2
@end example
IPv6 Example:
@example
--endpoints=[2001:db8::dead:beef]:[::ffff:0:0:ac:f:0:2]
@end example

EOText;
};

flag = {
	name		= skipbroadcast;
	value		= b;
	descrip		= "Skip rewriting broadcast/multicast IPv4/v6 addresses";
	doc			= <<- EOText
By default --seed, --pnat and --endpoints will rewrite 
broadcast and multicast IPv4/v6 and MAC addresses.	Setting this flag
will keep broadcast/multicast IPv4/v6 and MAC addresses from being rewritten.
EOText;
};

flag = {
    name        = fixcsum;
    value       = C;
    descrip     = "Force recalculation of IPv4/TCP/UDP header checksums";
    doc         = <<- EOText
Causes each IPv4/v6 packet to have it's checksums recalcualted and
fixed.  Automatically enabled for packets modified with @samp{--seed}, 
@samp{--pnat}, @samp{--endpoints} or @samp{--fixlen}.
EOText;
};

flag = {
    name        = mtu;
    value       = m;
    arg-type    = number;
    max         = 1;
    arg-range   = "1->MAXPACKET";
    default     = DEFAULT_MTU;
    descrip     = "Override default MTU length (1500 bytes)";
    doc         = <<- EOText
Override the default 1500 byte MTU size for determining the maximum padding length 
(--fixlen=pad) or when truncating (--mtu-trunc).
EOText;
};

flag = {
    name        = mtu-trunc;
    max         = 1;
    descrip     = "Truncate packets larger then specified MTU";
    doc         = <<- EOText
Similar to --fixlen, this option will truncate data in packets from Layer 3 and above to be 
no larger then the MTU.
EOText;
};

flag = {
    name        = efcs;
    value       = E;
    descrip     = "Remove Ethernet checksums (FCS) from end of frames";
    doc         = <<- EOText
Note, this option is pretty dangerous!  We don't actually check to see if a FCS
actually exists in the frame, we just blindly delete the last two bytes.  Hence,
you should only use this if you know know that your OS provides the FCS when 
reading raw packets.
EOText;
};

flag = {
    name        = ttl;
    descrip     = "Modify the IPv4/v6 TTL/Hop Limit";
    arg-type    = string;
    doc         = <<- EOText
Allows you to modify the TTL/Hop Limit of all the IPv4/v6 packets.  Specify a number to hard-code
the value or +/-value to increase or decrease by the value provided (limited to 1-255).    

Examples:
@example
--ttl=10
--ttl=+7
--ttl=-64
@end example
EOText;
};

flag = {
    name        = tos;
    descrip     = "Set the IPv4 TOS/DiffServ/ECN byte";
    arg-type    = number;
    arg-range   = "0->255";
    max         = 1;
    doc         = <<- EOText
Allows you to override the TOS (also known as DiffServ/ECN) value in IPv4.
EOText;
};

flag = {
    name        = tclass;
    descrip     = "Set the IPv6 Traffic Class byte";
    arg-type    = number;
    arg-range   = "0->255";
    max         = 1;
    doc         = <<- EOText
Allows you to override the IPv6 Traffic Class field.
EOText;
};

flag = {
    name        = flowlabel;
    descrip     = "Set the IPv6 Flow Label";
    arg-type    = number;
    arg-range   = "0->1048575";
    max         = 1;
    doc         = <<- EOText
Allows you to override the 20bit IPv6 Flow Label field.  Has no effect on IPv4 
packets.
EOText;
};

flag = {
    name        = fixlen;
    value       = F;
    arg-type    = string;
    descrip     = "Pad or truncate packet data to match header length";
    max         = 1;
    doc         = <<- EOText
Packets may be truncated during capture if the snaplen is smaller then the
packet.  This option allows you to modify the packet to pad the packet back
out to the size stored in the IPv4/v6 header or rewrite the IP header total length
to reflect the stored packet length.
@table @bullet
@item
@var{pad}
Truncated packets will be padded out so that the packet length matches the 
IPv4 total length
@item
@var{trunc}
Truncated packets will have their IPv4 total length field rewritten to match
the actual packet length
@item
@var{del}
Delete the packet
EOText;
};

#include plugins/dlt_stub.def