[457] | 1 | /*
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| 2 | * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without modification,
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| 6 | * are permitted provided that the following conditions are met:
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| 7 | *
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| 8 | * 1. Redistributions of source code must retain the above copyright notice,
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| 9 | * this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 11 | * this list of conditions and the following disclaimer in the documentation
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| 12 | * and/or other materials provided with the distribution.
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| 13 | * 3. The name of the author may not be used to endorse or promote products
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| 14 | * derived from this software without specific prior written permission.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 25 | * OF SUCH DAMAGE.
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| 26 | *
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| 27 | * This file is part of the lwIP TCP/IP stack.
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| 28 | *
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| 29 | * Author: Erik Ekman <erik@kryo.se>
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| 30 | *
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| 31 | */
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| 32 |
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| 33 | #include "lwip/init.h"
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| 34 | #include "lwip/netif.h"
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| 35 | #include "lwip/dns.h"
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| 36 | #include "netif/etharp.h"
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| 37 | #if LWIP_IPV6
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| 38 | #include "lwip/ethip6.h"
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| 39 | #include "lwip/nd6.h"
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| 40 | #endif
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| 41 |
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| 42 | #include "lwip/apps/httpd.h"
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| 43 | #include "lwip/apps/snmp.h"
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| 44 | #include "lwip/apps/lwiperf.h"
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| 45 | #include "lwip/apps/mdns.h"
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| 46 |
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| 47 | #include <string.h>
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| 48 | #include <stdio.h>
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| 49 |
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| 50 | /* This define enables multi packet processing.
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| 51 | * For this, the input is interpreted as 2 byte length + data + 2 byte length + data...
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| 52 | * #define LWIP_FUZZ_MULTI_PACKET
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| 53 | */
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| 54 | #ifdef LWIP_FUZZ_MULTI_PACKET
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| 55 | u8_t pktbuf[20000];
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| 56 | #else
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| 57 | u8_t pktbuf[2000];
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| 58 | #endif
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| 59 |
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| 60 | /* no-op send function */
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| 61 | static err_t lwip_tx_func(struct netif *netif, struct pbuf *p)
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| 62 | {
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| 63 | LWIP_UNUSED_ARG(netif);
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| 64 | LWIP_UNUSED_ARG(p);
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| 65 | return ERR_OK;
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| 66 | }
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| 67 |
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| 68 | static err_t testif_init(struct netif *netif)
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| 69 | {
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| 70 | netif->name[0] = 'f';
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| 71 | netif->name[1] = 'z';
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| 72 | netif->output = etharp_output;
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| 73 | netif->linkoutput = lwip_tx_func;
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| 74 | netif->mtu = 1500;
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| 75 | netif->hwaddr_len = 6;
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| 76 | netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP;
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| 77 |
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| 78 | netif->hwaddr[0] = 0x00;
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| 79 | netif->hwaddr[1] = 0x23;
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| 80 | netif->hwaddr[2] = 0xC1;
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| 81 | netif->hwaddr[3] = 0xDE;
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| 82 | netif->hwaddr[4] = 0xD0;
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| 83 | netif->hwaddr[5] = 0x0D;
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| 84 |
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| 85 | #if LWIP_IPV6
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| 86 | netif->output_ip6 = ethip6_output;
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| 87 | netif->ip6_autoconfig_enabled = 1;
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| 88 | netif_create_ip6_linklocal_address(netif, 1);
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| 89 | netif->flags |= NETIF_FLAG_MLD6;
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| 90 | #endif
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| 91 |
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| 92 | return ERR_OK;
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| 93 | }
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| 94 |
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| 95 | static void input_pkt(struct netif *netif, const u8_t *data, size_t len)
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| 96 | {
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| 97 | struct pbuf *p, *q;
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| 98 | err_t err;
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| 99 |
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| 100 | LWIP_ASSERT("pkt too big", len <= 0xFFFF);
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| 101 | p = pbuf_alloc(PBUF_RAW, (u16_t)len, PBUF_POOL);
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| 102 | LWIP_ASSERT("alloc failed", p);
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| 103 | for(q = p; q != NULL; q = q->next) {
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| 104 | MEMCPY(q->payload, data, q->len);
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| 105 | data += q->len;
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| 106 | }
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| 107 | err = netif->input(p, netif);
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| 108 | if (err != ERR_OK) {
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| 109 | pbuf_free(p);
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| 110 | }
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| 111 | }
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| 112 |
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| 113 | static void input_pkts(struct netif *netif, const u8_t *data, size_t len)
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| 114 | {
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| 115 | #ifdef LWIP_FUZZ_MULTI_PACKET
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| 116 | const u16_t max_packet_size = 1514;
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| 117 | const u8_t *ptr = data;
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| 118 | size_t rem_len = len;
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| 119 |
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| 120 | while (rem_len > sizeof(u16_t)) {
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| 121 | u16_t frame_len;
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| 122 | memcpy(&frame_len, ptr, sizeof(u16_t));
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| 123 | ptr += sizeof(u16_t);
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| 124 | rem_len -= sizeof(u16_t);
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| 125 | frame_len = htons(frame_len) & 0x7FF;
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| 126 | frame_len = LWIP_MIN(frame_len, max_packet_size);
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| 127 | if (frame_len > rem_len) {
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| 128 | frame_len = (u16_t)rem_len;
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| 129 | }
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| 130 | if (frame_len != 0) {
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| 131 | input_pkt(netif, ptr, frame_len);
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| 132 | }
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| 133 | ptr += frame_len;
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| 134 | rem_len -= frame_len;
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| 135 | }
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| 136 | #else /* LWIP_FUZZ_MULTI_PACKET */
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| 137 | input_pkt(netif, data, len);
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| 138 | #endif /* LWIP_FUZZ_MULTI_PACKET */
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| 139 | }
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| 140 |
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| 141 | int main(int argc, char** argv)
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| 142 | {
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| 143 | struct netif net_test;
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| 144 | ip4_addr_t addr;
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| 145 | ip4_addr_t netmask;
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| 146 | ip4_addr_t gw;
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| 147 | size_t len;
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| 148 |
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| 149 | lwip_init();
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| 150 |
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| 151 | IP4_ADDR(&addr, 172, 30, 115, 84);
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| 152 | IP4_ADDR(&netmask, 255, 255, 255, 0);
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| 153 | IP4_ADDR(&gw, 172, 30, 115, 1);
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| 154 |
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| 155 | netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
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| 156 | netif_set_up(&net_test);
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| 157 | netif_set_link_up(&net_test);
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| 158 |
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| 159 | #if LWIP_IPV6
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| 160 | nd6_tmr(); /* tick nd to join multicast groups */
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| 161 | #endif
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| 162 | dns_setserver(0, &net_test.gw);
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| 163 |
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| 164 | /* initialize apps */
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| 165 | httpd_init();
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| 166 | lwiperf_start_tcp_server_default(NULL, NULL);
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| 167 | mdns_resp_init();
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| 168 | mdns_resp_add_netif(&net_test, "hostname", 255);
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| 169 | snmp_init();
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| 170 |
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| 171 | if(argc > 1) {
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| 172 | FILE* f;
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| 173 | const char* filename;
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| 174 | printf("reading input from file... ");
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| 175 | fflush(stdout);
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| 176 | filename = argv[1];
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| 177 | LWIP_ASSERT("invalid filename", filename != NULL);
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| 178 | f = fopen(filename, "rb");
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| 179 | LWIP_ASSERT("open failed", f != NULL);
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| 180 | len = fread(pktbuf, 1, sizeof(pktbuf), f);
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| 181 | fclose(f);
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| 182 | printf("testing file: \"%s\"...\r\n", filename);
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| 183 | } else {
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| 184 | len = fread(pktbuf, 1, sizeof(pktbuf), stdin);
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| 185 | }
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| 186 | input_pkts(&net_test, pktbuf, len);
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| 187 |
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| 188 | return 0;
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| 189 | }
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