/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
 * Subject to the GPL, version 2.
 *
 * IP Authentication Header described in RFC4302
 */

#include <stdio.h>
#include <stdint.h>
#include <netinet/in.h>    /* for ntohs() */

#include "proto.h"
#include "protos.h"
#include "dissector_eth.h"
#include "built_in.h"
#include "pkt_buff.h"

struct auth_hdr {
	uint8_t h_next_header;
	uint8_t h_payload_len;
	uint16_t h_reserved;
	uint32_t h_spi;
	uint32_t h_snf;
} __packed;

static void auth_hdr(struct pkt_buff *pkt)
{
	size_t i, hdr_len;
	struct auth_hdr *auth_ops;

	auth_ops = (struct auth_hdr *) pkt_pull(pkt, sizeof(*auth_ops));
	if (auth_ops == NULL)
		return;

	hdr_len = (auth_ops->h_payload_len * 4) + 8;

	tprintf(" [ Authentication Header ");
	tprintf("NextHdr (%u), ", auth_ops->h_next_header);
	if (hdr_len > pkt_len(pkt)) {
		tprintf("HdrLen (%u, %zd Bytes %s), ",
		      auth_ops->h_payload_len, hdr_len,
		      colorize_start_full(black, red)
		      "invalid" colorize_end());
		      return;
	}
	tprintf("HdrLen (%u, %zd Bytes), ",auth_ops->h_payload_len, hdr_len);
	tprintf("Reserved (0x%x), ", ntohs(auth_ops->h_reserved));
	/* TODO
	 * Upgrade for Extended (64-bit) Sequence Number
	 * http://tools.ietf.org/html/rfc4302#section-2.5.1
	 */
	tprintf("SPI (0x%x), ", ntohl(auth_ops->h_spi));
	tprintf("SNF (0x%x), ", ntohl(auth_ops->h_snf));
	tprintf("ICV 0x");
	for (i = sizeof(struct auth_hdr); i < hdr_len; i++) {
		uint8_t *data = pkt_pull(pkt, 1);

		if (data == NULL) {
			tprintf("%sinvalid%s", colorize_start_full(black, red),
				colorize_end());
			break;
		}

		tprintf("%02x", *data);
	}
	tprintf(" ]\n");

	pkt_set_proto(pkt, &eth_lay3, auth_ops->h_next_header);
}

static void auth_hdr_less(struct pkt_buff *pkt)
{
  	ssize_t hdr_len;
	struct auth_hdr *auth_ops;

	auth_ops = (struct auth_hdr *) pkt_pull(pkt, sizeof(*auth_ops));
	if (auth_ops == NULL)
		return;

	hdr_len = (auth_ops->h_payload_len * 4) + 8;
	if (hdr_len > pkt_len(pkt) || hdr_len < 0)
		return;

	tprintf(" AH");

	pkt_pull(pkt, hdr_len - sizeof(*auth_ops));
	pkt_set_proto(pkt, &eth_lay3, auth_ops->h_next_header);
}

struct protocol ip_auth_ops = {
	.key = 0x33,
	.print_full = auth_hdr,
	.print_less = auth_hdr_less,
};
td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/class/cdc-acm.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='d07830db1bdb254e4b50d366010b219286b8c937'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/class?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>class</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/class/cdc-acm.c?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>cdc-acm.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='d07830db1bdb254e4b50d366010b219286b8c937'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Marcel J.E. Mol &lt;marcel@mesa.nl&gt;</td><td class='right'>2017-01-30 19:26:40 +0100</td></tr>
<tr><th>committer</th><td>Johan Hovold &lt;johan@kernel.org&gt;</td><td class='right'>2017-01-31 17:27:04 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/class/cdc-acm.c?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>d07830db1bdb254e4b50d366010b219286b8c937</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/class/cdc-acm.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>354d7fca237fa3d7e7e63c2196eaa4e1086838ea</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/class/cdc-acm.c?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>drivers/usb/class/cdc-acm.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/class/cdc-acm.c?h=nds-private-remove&amp;id=5d03a2fd2292e71936c4235885c35ccc3c94695b'>5d03a2fd2292e71936c4235885c35ccc3c94695b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/class/cdc-acm.c?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937&amp;id2=5d03a2fd2292e71936c4235885c35ccc3c94695b'>diff</a>)</td></tr></table>
<div class='commit-subject'>USB: serial: pl2303: add ATEN device ID</div><div class='commit-msg'>Seems that ATEN serial-to-usb devices using pl2303 exist with
different device ids. This patch adds a missing device ID so it
is recognised by the driver.

Signed-off-by: Marcel J.E. Mol &lt;marcel@mesa.nl&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=d07830db1bdb254e4b50d366010b219286b8c937'>Diffstat</a> (limited to 'drivers/usb/class/cdc-acm.c')</div><table summary='diffstat' class='diffstat'>