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lwip/test/unit/dhcp/test_dhcp.c

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#include "test_dhcp.h"
#include "lwip/netif.h"
#include "lwip/dhcp.h"
#include "netif/etharp.h"
struct netif net_test;
static const u8_t broadcast[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
static const u8_t magic_cookie[] = { 0x63, 0x82, 0x53, 0x63 };
static u8_t dhcp_offer[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, /* To unit */
0x00, 0x0F, 0xEE, 0x30, 0xAB, 0x22, /* From Remote host */
0x08, 0x00, /* Protocol: IP */
0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00, 0x80, 0x11, 0x36, 0xcc, 0xc3, 0xaa, 0xbd, 0xab, 0xc3, 0xaa, 0xbd, 0xc8, /* IP header */
0x00, 0x43, 0x00, 0x44, 0x01, 0x34, 0x00, 0x00, /* UDP header */
0x02, /* Type == Boot reply */
0x01, 0x06, /* Hw Ethernet, 6 bytes addrlen */
0x00, /* 0 hops */
0xAA, 0xAA, 0xAA, 0xAA, /* Transaction id, will be overwritten */
0x00, 0x00, /* 0 seconds elapsed */
0x00, 0x00, /* Flags (unicast) */
0x00, 0x00, 0x00, 0x00, /* Client ip */
0xc3, 0xaa, 0xbd, 0xc8, /* Your IP */
0xc3, 0xaa, 0xbd, 0xab, /* DHCP server ip */
0x00, 0x00, 0x00, 0x00, /* relay agent */
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* MAC addr + padding */
/* Empty server name and boot file name */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x63, 0x82, 0x53, 0x63, /* Magic cookie */
0x35, 0x01, 0x02, /* Message type: Offer */
0x36, 0x04, 0xc3, 0xaa, 0xbd, 0xab, /* Server identifier (IP) */
0x33, 0x04, 0x00, 0x00, 0x00, 0x78, /* Lease time 2 minutes */
0x03, 0x04, 0xc3, 0xaa, 0xbd, 0xab, /* Router IP */
0x01, 0x04, 0xff, 0xff, 0xff, 0x00, /* Subnet mask */
0xff, /* End option */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Padding */
};
static u8_t dhcp_ack[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, /* To unit */
0x00, 0x0f, 0xEE, 0x30, 0xAB, 0x22, /* From remote host */
0x08, 0x00, /* Proto IP */
0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00, 0x80, 0x11, 0x36, 0xcc, 0xc3, 0xaa, 0xbd, 0xab, 0xc3, 0xaa, 0xbd, 0xc8, /* IP header */
0x00, 0x43, 0x00, 0x44, 0x01, 0x34, 0x00, 0x00, /* UDP header */
0x02, /* Bootp reply */
0x01, 0x06, /* Hw type Eth, len 6 */
0x00, /* 0 hops */
0xAA, 0xAA, 0xAA, 0xAA,
0x00, 0x00, /* 0 seconds elapsed */
0x00, 0x00, /* Flags (unicast) */
0x00, 0x00, 0x00, 0x00, /* Client IP */
0xc3, 0xaa, 0xbd, 0xc8, /* Your IP */
0xc3, 0xaa, 0xbd, 0xab, /* DHCP server IP */
0x00, 0x00, 0x00, 0x00, /* Relay agent */
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Macaddr + padding */
/* Empty server name and boot file name */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x63, 0x82, 0x53, 0x63, /* Magic cookie */
0x35, 0x01, 0x05, /* Dhcp message type ack */
0x36, 0x04, 0xc3, 0xaa, 0xbd, 0xab, /* DHCP server identifier */
0x33, 0x04, 0x00, 0x00, 0x00, 0x78, /* Lease time 2 minutes */
0x03, 0x04, 0xc3, 0xaa, 0xbd, 0xab, /* Router IP */
0x01, 0x04, 0xff, 0xff, 0xff, 0x00, /* Netmask */
0xff, /* End marker */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Padding */
};
static const u8_t arpreply[] = {
0x00, 0x23, 0xC1, 0xDE, 0xD0, 0x0D, /* dst mac */
0x00, 0x32, 0x44, 0x20, 0x01, 0x02, /* src mac */
0x08, 0x06, /* proto arp */
0x00, 0x01, /* hw eth */
0x08, 0x00, /* proto ip */
0x06, /* hw addr len 6 */
0x04, /* proto addr len 4 */
0x00, 0x02, /* arp reply */
0x00, 0x32, 0x44, 0x20, 0x01, 0x02, /* sender mac */
0xc3, 0xaa, 0xbd, 0xc8, /* sender ip */
0x00, 0x23, 0xC1, 0xDE, 0xD0, 0x0D, /* target mac */
0x00, 0x00, 0x00, 0x00, /* target ip */
};
static int txpacket;
static enum tcase {
TEST_LWIP_DHCP,
TEST_LWIP_DHCP_NAK,
TEST_LWIP_DHCP_RELAY,
TEST_LWIP_DHCP_NAK_NO_ENDMARKER,
} tcase;
static int debug = 0;
static void setdebug(int a) {debug = a;}
static int tick = 0;
static void tick_lwip(void)
{
tick++;
if (tick % 5 == 0) {
dhcp_fine_tmr();
}
if (tick % 600 == 0) {
dhcp_coarse_tmr();
}
}
static void send_pkt(struct netif *netif, const u8_t *data, size_t len)
{
struct pbuf *p, *q;
LWIP_ASSERT("pkt too big", len <= 0xFFFF);
p = pbuf_alloc(PBUF_RAW, (u16_t)len, PBUF_POOL);
if (debug) {
/* Dump data */
u32_t i;
printf("RX data (len %d)", p->tot_len);
for (i = 0; i < len; i++) {
printf(" %02X", data[i]);
}
printf("\n");
}
fail_unless(p != NULL);
for(q = p; q != NULL; q = q->next) {
memcpy(q->payload, data, q->len);
data += q->len;
}
netif->input(p, netif);
}
static err_t lwip_tx_func(struct netif *netif, struct pbuf *p);
static err_t testif_init(struct netif *netif)
{
netif->name[0] = 'c';
netif->name[1] = 'h';
netif->output = etharp_output;
netif->linkoutput = lwip_tx_func;
netif->mtu = 1500;
netif->hwaddr_len = 6;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
netif->hwaddr[0] = 0x00;
netif->hwaddr[1] = 0x23;
netif->hwaddr[2] = 0xC1;
netif->hwaddr[3] = 0xDE;
netif->hwaddr[4] = 0xD0;
netif->hwaddr[5] = 0x0D;
return ERR_OK;
}
static void dhcp_setup(void)
{
txpacket = 0;
}
static void dhcp_teardown(void)
{
}
static void check_pkt(struct pbuf *p, u32_t pos, const u8_t *mem, u32_t len)
{
u8_t *data;
fail_if((pos + len) > p->tot_len);
while (pos > p->len && p->next) {
pos -= p->len;
p = p->next;
}
fail_if(p == NULL);
fail_unless(pos + len <= p->len); /* All data we seek within same pbuf */
data = p->payload;
fail_if(memcmp(&data[pos], mem, len), "data at pos %d, len %d in packet %d did not match", pos, len, txpacket);
}
static void check_pkt_fuzzy(struct pbuf *p, u32_t startpos, const u8_t *mem, u32_t len)
{
int found;
u32_t i;
u8_t *data;
fail_if((startpos + len) > p->tot_len);
while (startpos > p->len && p->next) {
startpos -= p->len;
p = p->next;
}
fail_if(p == NULL);
fail_unless(startpos + len <= p->len); /* All data we seek within same pbuf */
found = 0;
data = p->payload;
for (i = startpos; i <= (p->len - len); i++) {
if (memcmp(&data[i], mem, len) == 0) {
found = 1;
break;
}
}
fail_unless(found);
}
static err_t lwip_tx_func(struct netif *netif, struct pbuf *p)
{
fail_unless(netif == &net_test);
txpacket++;
if (debug) {
struct pbuf *pp = p;
/* Dump data */
printf("TX data (pkt %d, len %d, tick %d)", txpacket, p->tot_len, tick);
do {
int i;
for (i = 0; i < pp->len; i++) {
printf(" %02X", ((u8_t *) pp->payload)[i]);
}
if (pp->next) {
pp = pp->next;
}
} while (pp->next);
printf("\n");
}
switch (tcase) {
case TEST_LWIP_DHCP:
switch (txpacket) {
case 1:
case 2:
{
const u8_t ipproto[] = { 0x08, 0x00 };
const u8_t bootp_start[] = { 0x01, 0x01, 0x06, 0x00}; /* bootp request, eth, hwaddr len 6, 0 hops */
const u8_t ipaddrs[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
check_pkt(p, 0, broadcast, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, ipproto, sizeof(ipproto)); /* eth level proto: ip */
check_pkt(p, 42, bootp_start, sizeof(bootp_start));
check_pkt(p, 53, ipaddrs, sizeof(ipaddrs));
check_pkt(p, 70, netif->hwaddr, 6); /* mac addr inside bootp */
check_pkt(p, 278, magic_cookie, sizeof(magic_cookie));
/* Check dchp message type, can be at different positions */
if (txpacket == 1) {
u8_t dhcp_discover_opt[] = { 0x35, 0x01, 0x01 };
check_pkt_fuzzy(p, 282, dhcp_discover_opt, sizeof(dhcp_discover_opt));
} else if (txpacket == 2) {
u8_t dhcp_request_opt[] = { 0x35, 0x01, 0x03 };
u8_t requested_ipaddr[] = { 0x32, 0x04, 0xc3, 0xaa, 0xbd, 0xc8 }; /* Ask for offered IP */
check_pkt_fuzzy(p, 282, dhcp_request_opt, sizeof(dhcp_request_opt));
check_pkt_fuzzy(p, 282, requested_ipaddr, sizeof(requested_ipaddr));
}
break;
}
case 3:
case 4:
case 5:
{
const u8_t arpproto[] = { 0x08, 0x06 };
check_pkt(p, 0, broadcast, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, arpproto, sizeof(arpproto)); /* eth level proto: ip */
break;
}
}
break;
case TEST_LWIP_DHCP_NAK:
{
const u8_t ipproto[] = { 0x08, 0x00 };
const u8_t bootp_start[] = { 0x01, 0x01, 0x06, 0x00}; /* bootp request, eth, hwaddr len 6, 0 hops */
const u8_t ipaddrs[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
const u8_t dhcp_nak_opt[] = { 0x35, 0x01, 0x04 };
const u8_t requested_ipaddr[] = { 0x32, 0x04, 0xc3, 0xaa, 0xbd, 0xc8 }; /* offered IP */
fail_unless(txpacket == 4);
check_pkt(p, 0, broadcast, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, ipproto, sizeof(ipproto)); /* eth level proto: ip */
check_pkt(p, 42, bootp_start, sizeof(bootp_start));
check_pkt(p, 53, ipaddrs, sizeof(ipaddrs));
check_pkt(p, 70, netif->hwaddr, 6); /* mac addr inside bootp */
check_pkt(p, 278, magic_cookie, sizeof(magic_cookie));
check_pkt_fuzzy(p, 282, dhcp_nak_opt, sizeof(dhcp_nak_opt)); /* NAK the ack */
check_pkt_fuzzy(p, 282, requested_ipaddr, sizeof(requested_ipaddr));
break;
}
case TEST_LWIP_DHCP_RELAY:
switch (txpacket) {
case 1:
case 2:
{
const u8_t ipproto[] = { 0x08, 0x00 };
const u8_t bootp_start[] = { 0x01, 0x01, 0x06, 0x00}; /* bootp request, eth, hwaddr len 6, 0 hops */
const u8_t ipaddrs[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
check_pkt(p, 0, broadcast, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, ipproto, sizeof(ipproto)); /* eth level proto: ip */
check_pkt(p, 42, bootp_start, sizeof(bootp_start));
check_pkt(p, 53, ipaddrs, sizeof(ipaddrs));
check_pkt(p, 70, netif->hwaddr, 6); /* mac addr inside bootp */
check_pkt(p, 278, magic_cookie, sizeof(magic_cookie));
/* Check dchp message type, can be at different positions */
if (txpacket == 1) {
u8_t dhcp_discover_opt[] = { 0x35, 0x01, 0x01 };
check_pkt_fuzzy(p, 282, dhcp_discover_opt, sizeof(dhcp_discover_opt));
} else if (txpacket == 2) {
u8_t dhcp_request_opt[] = { 0x35, 0x01, 0x03 };
u8_t requested_ipaddr[] = { 0x32, 0x04, 0x4f, 0x8a, 0x33, 0x05 }; /* Ask for offered IP */
check_pkt_fuzzy(p, 282, dhcp_request_opt, sizeof(dhcp_request_opt));
check_pkt_fuzzy(p, 282, requested_ipaddr, sizeof(requested_ipaddr));
}
break;
}
case 3:
case 4:
case 5:
case 6:
{
const u8_t arpproto[] = { 0x08, 0x06 };
check_pkt(p, 0, broadcast, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, arpproto, sizeof(arpproto)); /* eth level proto: ip */
break;
}
case 7:
{
const u8_t fake_arp[6] = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xab };
const u8_t ipproto[] = { 0x08, 0x00 };
const u8_t bootp_start[] = { 0x01, 0x01, 0x06, 0x00}; /* bootp request, eth, hwaddr len 6, 0 hops */
const u8_t ipaddrs[] = { 0x00, 0x4f, 0x8a, 0x33, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
const u8_t dhcp_request_opt[] = { 0x35, 0x01, 0x03 };
check_pkt(p, 0, fake_arp, 6); /* eth level dest: broadcast */
check_pkt(p, 6, netif->hwaddr, 6); /* eth level src: unit mac */
check_pkt(p, 12, ipproto, sizeof(ipproto)); /* eth level proto: ip */
check_pkt(p, 42, bootp_start, sizeof(bootp_start));
check_pkt(p, 53, ipaddrs, sizeof(ipaddrs));
check_pkt(p, 70, netif->hwaddr, 6); /* mac addr inside bootp */
check_pkt(p, 278, magic_cookie, sizeof(magic_cookie));
/* Check dchp message type, can be at different positions */
check_pkt_fuzzy(p, 282, dhcp_request_opt, sizeof(dhcp_request_opt));
break;
}
}
break;
default:
break;
}
return ERR_OK;
}
/*
* Test basic happy flow DHCP session.
* Validate that xid is checked.
*/
START_TEST(test_dhcp)
{
ip4_addr_t addr;
ip4_addr_t netmask;
ip4_addr_t gw;
int i;
u32_t xid;
LWIP_UNUSED_ARG(_i);
tcase = TEST_LWIP_DHCP;
setdebug(0);
IP4_ADDR(&addr, 0, 0, 0, 0);
IP4_ADDR(&netmask, 0, 0, 0, 0);
IP4_ADDR(&gw, 0, 0, 0, 0);
netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
netif_set_up(&net_test);
dhcp_start(&net_test);
fail_unless(txpacket == 1); /* DHCP discover sent */
xid = net_test.dhcp->xid; /* Write bad xid, not using htonl! */
memcpy(&dhcp_offer[46], &xid, 4);
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
/* IP addresses should be zero */
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
fail_unless(txpacket == 1, "TX %d packets, expected 1", txpacket); /* Nothing more sent */
xid = htonl(net_test.dhcp->xid);
memcpy(&dhcp_offer[46], &xid, 4); /* insert correct transaction id */
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
fail_unless(txpacket == 2, "TX %d packets, expected 2", txpacket); /* DHCP request sent */
xid = net_test.dhcp->xid; /* Write bad xid, not using htonl! */
memcpy(&dhcp_ack[46], &xid, 4);
send_pkt(&net_test, dhcp_ack, sizeof(dhcp_ack));
fail_unless(txpacket == 2, "TX %d packets, still expected 2", txpacket); /* No more sent */
xid = htonl(net_test.dhcp->xid); /* xid updated */
memcpy(&dhcp_ack[46], &xid, 4); /* insert transaction id */
send_pkt(&net_test, dhcp_ack, sizeof(dhcp_ack));
for (i = 0; i < 20; i++) {
tick_lwip();
}
fail_unless(txpacket == 5, "TX %d packets, expected 5", txpacket); /* ARP requests sent */
/* Interface up */
fail_unless(netif_is_up(&net_test));
/* Now it should have taken the IP */
IP4_ADDR(&addr, 195, 170, 189, 200);
IP4_ADDR(&netmask, 255, 255, 255, 0);
IP4_ADDR(&gw, 195, 170, 189, 171);
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
netif_remove(&net_test);
}
END_TEST
/*
* Test that IP address is not taken and NAK is sent if someone
* replies to ARP requests for the offered address.
*/
START_TEST(test_dhcp_nak)
{
ip4_addr_t addr;
ip4_addr_t netmask;
ip4_addr_t gw;
u32_t xid;
LWIP_UNUSED_ARG(_i);
tcase = TEST_LWIP_DHCP;
setdebug(0);
IP4_ADDR(&addr, 0, 0, 0, 0);
IP4_ADDR(&netmask, 0, 0, 0, 0);
IP4_ADDR(&gw, 0, 0, 0, 0);
netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
netif_set_up(&net_test);
dhcp_start(&net_test);
fail_unless(txpacket == 1); /* DHCP discover sent */
xid = net_test.dhcp->xid; /* Write bad xid, not using htonl! */
memcpy(&dhcp_offer[46], &xid, 4);
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
/* IP addresses should be zero */
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
fail_unless(txpacket == 1); /* Nothing more sent */
xid = htonl(net_test.dhcp->xid);
memcpy(&dhcp_offer[46], &xid, 4); /* insert correct transaction id */
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
fail_unless(txpacket == 2); /* DHCP request sent */
xid = net_test.dhcp->xid; /* Write bad xid, not using htonl! */
memcpy(&dhcp_ack[46], &xid, 4);
send_pkt(&net_test, dhcp_ack, sizeof(dhcp_ack));
fail_unless(txpacket == 2); /* No more sent */
xid = htonl(net_test.dhcp->xid); /* xid updated */
memcpy(&dhcp_ack[46], &xid, 4); /* insert transaction id */
send_pkt(&net_test, dhcp_ack, sizeof(dhcp_ack));
fail_unless(txpacket == 3); /* ARP request sent */
tcase = TEST_LWIP_DHCP_NAK; /* Switch testcase */
/* Send arp reply, mark offered IP as taken */
send_pkt(&net_test, arpreply, sizeof(arpreply));
fail_unless(txpacket == 4); /* DHCP nak sent */
netif_remove(&net_test);
}
END_TEST
/*
* Test case based on captured data where
* replies are sent from a different IP than the
* one the client unicasted to.
*/
START_TEST(test_dhcp_relayed)
{
u8_t relay_offer[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d,
0x00, 0x22, 0x93, 0x5a, 0xf7, 0x60,
0x08, 0x00, 0x45, 0x00,
0x01, 0x38, 0xfd, 0x53, 0x00, 0x00, 0x40, 0x11,
0x78, 0x46, 0x4f, 0x8a, 0x32, 0x02, 0x4f, 0x8a,
0x33, 0x05, 0x00, 0x43, 0x00, 0x44, 0x01, 0x24,
0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x51, 0x35,
0xb6, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x4f, 0x8a, 0x33, 0x05, 0x00, 0x00,
0x00, 0x00, 0x0a, 0xb5, 0x04, 0x01, 0x00, 0x23,
0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82,
0x53, 0x63, 0x01, 0x04, 0xff, 0xff, 0xfe, 0x00,
0x03, 0x04, 0x4f, 0x8a, 0x32, 0x01, 0x06, 0x08,
0x4f, 0x8a, 0x00, 0xb4, 0x55, 0x08, 0x1f, 0xd1,
0x1c, 0x04, 0x4f, 0x8a, 0x33, 0xff, 0x33, 0x04,
0x00, 0x00, 0x54, 0x49, 0x35, 0x01, 0x02, 0x36,
0x04, 0x0a, 0xb5, 0x04, 0x01, 0xff
};
u8_t relay_ack1[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x22,
0x93, 0x5a, 0xf7, 0x60, 0x08, 0x00, 0x45, 0x00,
0x01, 0x38, 0xfd, 0x55, 0x00, 0x00, 0x40, 0x11,
0x78, 0x44, 0x4f, 0x8a, 0x32, 0x02, 0x4f, 0x8a,
0x33, 0x05, 0x00, 0x43, 0x00, 0x44, 0x01, 0x24,
0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x51, 0x35,
0xb6, 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x4f, 0x8a, 0x33, 0x05, 0x00, 0x00,
0x00, 0x00, 0x0a, 0xb5, 0x04, 0x01, 0x00, 0x23,
0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82,
0x53, 0x63, 0x01, 0x04, 0xff, 0xff, 0xfe, 0x00,
0x03, 0x04, 0x4f, 0x8a, 0x32, 0x01, 0x06, 0x08,
0x4f, 0x8a, 0x00, 0xb4, 0x55, 0x08, 0x1f, 0xd1,
0x1c, 0x04, 0x4f, 0x8a, 0x33, 0xff, 0x33, 0x04,
0x00, 0x00, 0x54, 0x49, 0x35, 0x01, 0x05, 0x36,
0x04, 0x0a, 0xb5, 0x04, 0x01, 0xff
};
u8_t relay_ack2[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d,
0x00, 0x22, 0x93, 0x5a, 0xf7, 0x60,
0x08, 0x00, 0x45, 0x00,
0x01, 0x38, 0xfa, 0x18, 0x00, 0x00, 0x40, 0x11,
0x7b, 0x81, 0x4f, 0x8a, 0x32, 0x02, 0x4f, 0x8a,
0x33, 0x05, 0x00, 0x43, 0x00, 0x44, 0x01, 0x24,
0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x49, 0x8b,
0x6e, 0xab, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x8a,
0x33, 0x05, 0x4f, 0x8a, 0x33, 0x05, 0x00, 0x00,
0x00, 0x00, 0x0a, 0xb5, 0x04, 0x01, 0x00, 0x23,
0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82,
0x53, 0x63, 0x01, 0x04, 0xff, 0xff, 0xfe, 0x00,
0x03, 0x04, 0x4f, 0x8a, 0x32, 0x01, 0x06, 0x08,
0x4f, 0x8a, 0x00, 0xb4, 0x55, 0x08, 0x1f, 0xd1,
0x1c, 0x04, 0x4f, 0x8a, 0x33, 0xff, 0x33, 0x04,
0x00, 0x00, 0x54, 0x60, 0x35, 0x01, 0x05, 0x36,
0x04, 0x0a, 0xb5, 0x04, 0x01, 0xff };
const u8_t arp_resp[] = {
0x00, 0x23, 0xc1, 0xde, 0xd0, 0x0d, /* DEST */
0x00, 0x22, 0x93, 0x5a, 0xf7, 0x60, /* SRC */
0x08, 0x06, /* Type: ARP */
0x00, 0x01, /* HW: Ethernet */
0x08, 0x00, /* PROTO: IP */
0x06, /* HW size */
0x04, /* PROTO size */
0x00, 0x02, /* OPCODE: Reply */
0x12, 0x34, 0x56, 0x78, 0x9a, 0xab, /* Target MAC */
0x4f, 0x8a, 0x32, 0x01, /* Target IP */
0x00, 0x23, 0xc1, 0x00, 0x06, 0x50, /* src mac */
0x4f, 0x8a, 0x33, 0x05, /* src ip */
/* Padding follows.. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
ip4_addr_t addr;
ip4_addr_t netmask;
ip4_addr_t gw;
int i;
u32_t xid;
LWIP_UNUSED_ARG(_i);
tcase = TEST_LWIP_DHCP_RELAY;
setdebug(0);
IP4_ADDR(&addr, 0, 0, 0, 0);
IP4_ADDR(&netmask, 0, 0, 0, 0);
IP4_ADDR(&gw, 0, 0, 0, 0);
netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
netif_set_up(&net_test);
dhcp_start(&net_test);
fail_unless(txpacket == 1); /* DHCP discover sent */
/* IP addresses should be zero */
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
fail_unless(txpacket == 1); /* Nothing more sent */
xid = htonl(net_test.dhcp->xid);
memcpy(&relay_offer[46], &xid, 4); /* insert correct transaction id */
send_pkt(&net_test, relay_offer, sizeof(relay_offer));
/* request sent? */
fail_unless(txpacket == 2, "txpkt = %d, should be 2", txpacket);
xid = htonl(net_test.dhcp->xid); /* xid updated */
memcpy(&relay_ack1[46], &xid, 4); /* insert transaction id */
send_pkt(&net_test, relay_ack1, sizeof(relay_ack1));
for (i = 0; i < 25; i++) {
tick_lwip();
}
fail_unless(txpacket == 5, "txpkt should be 5, is %d", txpacket); /* ARP requests sent */
/* Interface up */
fail_unless(netif_is_up(&net_test));
/* Now it should have taken the IP */
IP4_ADDR(&addr, 79, 138, 51, 5);
IP4_ADDR(&netmask, 255, 255, 254, 0);
IP4_ADDR(&gw, 79, 138, 50, 1);
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
fail_unless(txpacket == 5, "txpacket = %d", txpacket);
for (i = 0; i < 108000 - 25; i++) {
tick_lwip();
}
fail_unless(netif_is_up(&net_test));
fail_unless(txpacket == 6, "txpacket = %d", txpacket);
/* We need to send arp response here.. */
send_pkt(&net_test, arp_resp, sizeof(arp_resp));
fail_unless(txpacket == 7, "txpacket = %d", txpacket);
fail_unless(netif_is_up(&net_test));
xid = htonl(net_test.dhcp->xid); /* xid updated */
memcpy(&relay_ack2[46], &xid, 4); /* insert transaction id */
send_pkt(&net_test, relay_ack2, sizeof(relay_ack2));
for (i = 0; i < 100000; i++) {
tick_lwip();
}
fail_unless(txpacket == 7, "txpacket = %d", txpacket);
netif_remove(&net_test);
}
END_TEST
START_TEST(test_dhcp_nak_no_endmarker)
{
ip4_addr_t addr;
ip4_addr_t netmask;
ip4_addr_t gw;
u8_t dhcp_nack_no_endmarker[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x54, 0x75,
0xd0, 0x26, 0xd0, 0x0d, 0x08, 0x00, 0x45, 0x00,
0x01, 0x15, 0x38, 0x86, 0x00, 0x00, 0xff, 0x11,
0xc0, 0xa8, 0xc0, 0xa8, 0x01, 0x01, 0xff, 0xff,
0xff, 0xff, 0x00, 0x43, 0x00, 0x44, 0x01, 0x01,
0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x7a, 0xcb,
0xba, 0xf2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23,
0xc1, 0xde, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82,
0x53, 0x63, 0x35, 0x01, 0x06, 0x36, 0x04, 0xc0,
0xa8, 0x01, 0x01, 0x31, 0xef, 0xad, 0x72, 0x31,
0x43, 0x4e, 0x44, 0x30, 0x32, 0x35, 0x30, 0x43,
0x52, 0x47, 0x44, 0x38, 0x35, 0x36, 0x3c, 0x08,
0x4d, 0x53, 0x46, 0x54, 0x20, 0x35, 0x2e, 0x30,
0x37, 0x0d, 0x01, 0x0f, 0x03, 0x06, 0x2c, 0x2e,
0x2f, 0x1f, 0x21, 0x79, 0xf9, 0x2b, 0xfc, 0xff,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe2, 0x71,
0xf3, 0x5b, 0xe2, 0x71, 0x2e, 0x01, 0x08, 0x03,
0x04, 0xc0, 0xa8, 0x01, 0x01, 0xff, 0xeb, 0x1e,
0x44, 0xec, 0xeb, 0x1e, 0x30, 0x37, 0x0c, 0x01,
0x0f, 0x03, 0x06, 0x2c, 0x2e, 0x2f, 0x1f, 0x21,
0x79, 0xf9, 0x2b, 0xff, 0x25, 0xc0, 0x09, 0xd6,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
u32_t xid;
LWIP_UNUSED_ARG(_i);
tcase = TEST_LWIP_DHCP_NAK_NO_ENDMARKER;
setdebug(0);
IP4_ADDR(&addr, 0, 0, 0, 0);
IP4_ADDR(&netmask, 0, 0, 0, 0);
IP4_ADDR(&gw, 0, 0, 0, 0);
netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, ethernet_input);
netif_set_up(&net_test);
dhcp_start(&net_test);
fail_unless(txpacket == 1); /* DHCP discover sent */
xid = net_test.dhcp->xid; /* Write bad xid, not using htonl! */
memcpy(&dhcp_offer[46], &xid, 4);
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
/* IP addresses should be zero */
fail_if(memcmp(&addr, &net_test.ip_addr, sizeof(ip4_addr_t)));
fail_if(memcmp(&netmask, &net_test.netmask, sizeof(ip4_addr_t)));
fail_if(memcmp(&gw, &net_test.gw, sizeof(ip4_addr_t)));
fail_unless(txpacket == 1); /* Nothing more sent */
xid = htonl(net_test.dhcp->xid);
memcpy(&dhcp_offer[46], &xid, 4); /* insert correct transaction id */
send_pkt(&net_test, dhcp_offer, sizeof(dhcp_offer));
fail_unless(net_test.dhcp->state == DHCP_STATE_REQUESTING);
fail_unless(txpacket == 2); /* No more sent */
xid = htonl(net_test.dhcp->xid); /* xid updated */
memcpy(&dhcp_nack_no_endmarker[46], &xid, 4); /* insert transaction id */
send_pkt(&net_test, dhcp_nack_no_endmarker, sizeof(dhcp_nack_no_endmarker));
/* NAK should put us in another state for a while, no other way detecting it */
fail_unless(net_test.dhcp->state != DHCP_STATE_REQUESTING);
netif_remove(&net_test);
}
END_TEST
/** Create the suite including all tests for this module */
Suite *
dhcp_suite(void)
{
testfunc tests[] = {
TESTFUNC(test_dhcp),
TESTFUNC(test_dhcp_nak),
TESTFUNC(test_dhcp_relayed),
TESTFUNC(test_dhcp_nak_no_endmarker)
};
return create_suite("DHCP", tests, sizeof(tests)/sizeof(testfunc), dhcp_setup, dhcp_teardown);
}
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