fuzz.c

00001 /*
00002  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
00003  * All rights reserved. 
00004  * 
00005  * Redistribution and use in source and binary forms, with or without modification, 
00006  * are permitted provided that the following conditions are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright notice,
00009  *    this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright notice,
00011  *    this list of conditions and the following disclaimer in the documentation
00012  *    and/or other materials provided with the distribution.
00013  * 3. The name of the author may not be used to endorse or promote products
00014  *    derived from this software without specific prior written permission. 
00015  *
00016  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
00017  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
00018  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
00019  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
00020  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
00021  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
00022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
00023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
00024  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
00025  * OF SUCH DAMAGE.
00026  *
00027  * This file is part of the lwIP TCP/IP stack.
00028  * 
00029  * Author: Erik Ekman <erik@kryo.se>
00030  *
00031  */
00032 
00033 #include "lwip/init.h"
00034 #include "lwip/netif.h"
00035 #include "netif/etharp.h"
00036 #if LWIP_IPV6
00037 #include "lwip/ethip6.h"
00038 #include "lwip/nd6.h"
00039 #endif
00040 #include <string.h>
00041 #include <stdio.h>
00042 
00043 /* no-op send function */
00044 static err_t lwip_tx_func(struct netif *netif, struct pbuf *p)
00045 {
00046   LWIP_UNUSED_ARG(netif);
00047   LWIP_UNUSED_ARG(p);
00048   return ERR_OK;
00049 }
00050 
00051 static err_t testif_init(struct netif *netif)
00052 {
00053   netif->name[0] = 'f';
00054   netif->name[1] = 'z';
00055   netif->output = etharp_output;
00056   netif->linkoutput = lwip_tx_func;
00057   netif->mtu = 1500;
00058   netif->hwaddr_len = 6;
00059   netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
00060 
00061   netif->hwaddr[0] = 0x00;
00062   netif->hwaddr[1] = 0x23;
00063   netif->hwaddr[2] = 0xC1;
00064   netif->hwaddr[3] = 0xDE;
00065   netif->hwaddr[4] = 0xD0;
00066   netif->hwaddr[5] = 0x0D;
00067 
00068 #if LWIP_IPV6
00069   netif->output_ip6 = ethip6_output;
00070   netif->ip6_autoconfig_enabled = 1;
00071   netif_create_ip6_linklocal_address(netif, 1);
00072   netif->flags |= NETIF_FLAG_MLD6;
00073 #endif
00074 
00075   return ERR_OK;
00076 }
00077 
00078 static void input_pkt(struct netif *netif, const u8_t *data, size_t len)
00079 {
00080   struct pbuf *p, *q;
00081   err_t err;
00082 
00083   LWIP_ASSERT("pkt too big", len <= 0xFFFF);
00084   p = pbuf_alloc(PBUF_RAW, (u16_t)len, PBUF_POOL);
00085   LWIP_ASSERT("alloc failed", p);
00086   for(q = p; q != NULL; q = q->next) {
00087     MEMCPY(q->payload, data, q->len);
00088     data += q->len;
00089   }
00090   err = netif->input(p, netif);
00091   if (err != ERR_OK) {
00092     pbuf_free(p);
00093   }
00094 }
00095 
00096 int main(int argc, char** argv)
00097 {
00098   struct netif net_test;
00099   ip4_addr_t addr;
00100   ip4_addr_t netmask;
00101   ip4_addr_t gw;
00102   u8_t pktbuf[2000];
00103   size_t len;
00104 
00105   lwip_init();
00106 
00107   IP4_ADDR(&addr, 172, 30, 115, 84);
00108   IP4_ADDR(&netmask, 255, 255, 255, 0);
00109   IP4_ADDR(&gw, 172, 30, 115, 1);
00110 
00111   netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
00112   netif_set_up(&net_test);
00113 
00114 #if LWIP_IPV6
00115   nd6_tmr(); /* tick nd to join multicast groups */
00116 #endif
00117 
00118   if(argc > 1) {
00119     FILE* f;
00120     const char* filename;
00121     printf("reading input from file... ");
00122     fflush(stdout);
00123     filename = argv[1];
00124     LWIP_ASSERT("invalid filename", filename != NULL);
00125     f = fopen(filename, "rb");
00126     LWIP_ASSERT("open failed", f != NULL);
00127     len = fread(pktbuf, 1, sizeof(pktbuf), f);
00128     fclose(f);
00129     printf("testing file: \"%s\"...\r\n", filename);
00130   } else {
00131     len = fread(pktbuf, 1, sizeof(pktbuf), stdin);
00132   }
00133   input_pkt(&net_test, pktbuf, len);
00134 
00135   return 0;
00136 }