/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010, 2011, 2012 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>

#include "built_in.h"
#include "tprintf.h"
#include "pkt_buff.h"
#include "proto.h"
#include "dissector.h"
#include "dissector_eth.h"
#include "dissector_sll.h"
#include "dissector_80211.h"
#include "dissector_netlink.h"
#include "linktype.h"

int dissector_set_print_type(void *ptr, int type)
{
	struct protocol *proto;

	for (proto = ptr; proto; proto = proto->next) {
		switch (type) {
		case PRINT_NORM:
			proto->process = proto->print_full;
			break;
		case PRINT_LESS:
			proto->process = proto->print_less;
			break;
		default:
			proto->process = NULL;
			break;
		}
	}

	return 0;
}

static void dissector_main(struct pkt_buff *pkt, struct protocol *start,
			   struct protocol *end)
{
	struct protocol *dissector;

	if (!start)
		return;

	for (pkt->dissector = start; pkt->dissector; ) {
		if (unlikely(!pkt->dissector->process))
			break;

		dissector = pkt->dissector;
		pkt->dissector = NULL;
		dissector->process(pkt);
	}

	if (end && likely(end->process))
		end->process(pkt);
}

void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode,
			   struct sockaddr_ll *sll)
{
	struct protocol *proto_start, *proto_end;
	struct pkt_buff *pkt;

	if (mode == PRINT_NONE)
		return;

	pkt = pkt_alloc(packet, len);
	pkt->link_type = linktype;
	pkt->sll = sll;

	switch (linktype) {
	case LINKTYPE_EN10MB:
	case ___constant_swab32(LINKTYPE_EN10MB):
		proto_start = dissector_get_ethernet_entry_point();
		proto_end = dissector_get_ethernet_exit_point();
		break;
	case LINKTYPE_IEEE802_11_RADIOTAP:
	case ___constant_swab32(LINKTYPE_IEEE802_11_RADIOTAP):
	case LINKTYPE_IEEE802_11:
	case ___constant_swab32(LINKTYPE_IEEE802_11):
		proto_start = dissector_get_ieee80211_entry_point();
		proto_end = dissector_get_ieee80211_exit_point();
		break;
	case LINKTYPE_NETLINK:
	case ___constant_swab32(LINKTYPE_NETLINK):
		proto_start = dissector_get_netlink_entry_point();
		proto_end = dissector_get_netlink_exit_point();
		break;
	case LINKTYPE_LINUX_SLL:
	case ___constant_swab32(LINKTYPE_LINUX_SLL):
		proto_start = dissector_get_sll_entry_point();
		proto_end = dissector_get_sll_exit_point();
		break;
	default:
		proto_start = &none_ops;
		proto_end = NULL;
		break;
	};

	dissector_main(pkt, proto_start, proto_end);

	switch (mode) {
	case PRINT_HEX:
		hex(pkt);
		break;
	case PRINT_ASCII:
		ascii(pkt);
		break;
	case PRINT_HEX_ASCII:
		hex_ascii(pkt);
		break;
	}

	tprintf_flush();
	pkt_free(pkt);
}

void dissector_init_all(int fnttype)
{
	dissector_init_ethernet(fnttype);
	dissector_init_ieee80211(fnttype);
	dissector_init_netlink(fnttype);
	dissector_init_sll(fnttype);
}

void dissector_cleanup_all(void)
{
	dissector_cleanup_ethernet();
	dissector_cleanup_ieee80211();
	dissector_cleanup_netlink();
	dissector_cleanup_sll();
}
on 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>Nicholas Piggin &lt;npiggin@gmail.com&gt;</td><td class='right'>2016-11-09 15:34:05 +1100</td></tr>
<tr><th>committer</th><td>Michal Marek &lt;mmarek@suse.com&gt;</td><td class='right'>2016-11-09 22:29:53 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd'>cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd'>c4b7b075f890668a78c7a2bcea0016f10519c71d</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=90944e40ba1838de4b2a9290cf273f9d76bd3bdd'>90944e40ba1838de4b2a9290cf273f9d76bd3bdd</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd&amp;id2=90944e40ba1838de4b2a9290cf273f9d76bd3bdd'>diff</a>)</td></tr></table>
<div class='commit-subject'>kbuild: be more careful about matching preprocessed asm ___EXPORT_SYMBOL</div><div class='commit-msg'>The CRC code for asm exports grabs the preprocessed asm, finds the
___EXPORT_SYMBOL and turns those into EXPORT_SYMBOL in a C program
that can be preprocessed and parsed to create the CRC signatures from
the type.

The existing regex matching and replacement is too strict, and doesn't
deal well with whitespace among other things. The line
" EXPORT_SYMBOL(sym)" in a .S file would not match due to initial
whitespace, for example, which resulted in x86's ___preempt_schedule
failing to get CRCs.

Reported-by: Philip Müller &lt;philm@manjaro.org&gt;
Signed-off-by: Nicholas Piggin &lt;npiggin@gmail.com&gt;
Signed-off-by: Michal Marek &lt;mmarek@suse.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=cc6acc11cad1eb1ae39707a3a6e4a97fafbeeabd'>Diffstat</a></div><table summary='diffstat' class='diffstat'>