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-rw-r--r--test/unit/ip4/test_ip4.c342
1 files changed, 342 insertions, 0 deletions
diff --git a/test/unit/ip4/test_ip4.c b/test/unit/ip4/test_ip4.c
new file mode 100644
index 00000000000..af715daf7aa
--- /dev/null
+++ b/test/unit/ip4/test_ip4.c
@@ -0,0 +1,342 @@
+#include "test_ip4.h"
+
+#include "lwip/icmp.h"
+#include "lwip/ip4.h"
+#include "lwip/etharp.h"
+#include "lwip/inet_chksum.h"
+#include "lwip/stats.h"
+#include "lwip/prot/ip.h"
+#include "lwip/prot/ip4.h"
+
+#include "lwip/tcpip.h"
+
+#if !LWIP_IPV4 || !IP_REASSEMBLY || !MIB2_STATS || !IPFRAG_STATS
+#error "This tests needs LWIP_IPV4, IP_REASSEMBLY; MIB2- and IPFRAG-statistics enabled"
+#endif
+
+static struct netif test_netif;
+static ip4_addr_t test_ipaddr, test_netmask, test_gw;
+static int linkoutput_ctr;
+static int linkoutput_byte_ctr;
+static u16_t linkoutput_pkt_len;
+static u8_t linkoutput_pkt[100];
+
+/* reference internal lwip variable in netif.c */
+
+static err_t
+test_netif_linkoutput(struct netif *netif, struct pbuf *p)
+{
+ fail_unless(netif == &test_netif);
+ fail_unless(p != NULL);
+ linkoutput_ctr++;
+ linkoutput_byte_ctr += p->tot_len;
+ /* Copy start of packet into buffer */
+ linkoutput_pkt_len = pbuf_copy_partial(p, linkoutput_pkt, sizeof(linkoutput_pkt), 0);
+ return ERR_OK;
+}
+
+static err_t
+test_netif_init(struct netif *netif)
+{
+ fail_unless(netif != NULL);
+ netif->linkoutput = test_netif_linkoutput;
+ netif->output = etharp_output;
+ netif->mtu = 1500;
+ netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+ netif->hwaddr_len = ETHARP_HWADDR_LEN;
+ return ERR_OK;
+}
+
+static void
+test_netif_add(void)
+{
+ IP4_ADDR(&test_gw, 192,168,0,1);
+ IP4_ADDR(&test_ipaddr, 192,168,0,1);
+ IP4_ADDR(&test_netmask, 255,255,0,0);
+
+ fail_unless(netif_default == NULL);
+ netif_add(&test_netif, &test_ipaddr, &test_netmask, &test_gw,
+ NULL, test_netif_init, NULL);
+ netif_set_default(&test_netif);
+ netif_set_up(&test_netif);
+}
+
+static void
+test_netif_remove(void)
+{
+ if (netif_default == &test_netif) {
+ netif_remove(&test_netif);
+ }
+}
+
+/* Helper functions */
+static void
+create_ip4_input_fragment(u16_t ip_id, u16_t start, u16_t len, int last)
+{
+ struct pbuf *p;
+ struct netif *input_netif = netif_list; /* just use any netif */
+ fail_unless((start & 7) == 0);
+ fail_unless(((len & 7) == 0) || last);
+ fail_unless(input_netif != NULL);
+
+ p = pbuf_alloc(PBUF_RAW, len + sizeof(struct ip_hdr), PBUF_RAM);
+ fail_unless(p != NULL);
+ if (p != NULL) {
+ err_t err;
+ struct ip_hdr *iphdr = (struct ip_hdr *)p->payload;
+ IPH_VHL_SET(iphdr, 4, sizeof(struct ip_hdr) / 4);
+ IPH_TOS_SET(iphdr, 0);
+ IPH_LEN_SET(iphdr, lwip_htons(p->tot_len));
+ IPH_ID_SET(iphdr, lwip_htons(ip_id));
+ if (last) {
+ IPH_OFFSET_SET(iphdr, lwip_htons(start / 8));
+ } else {
+ IPH_OFFSET_SET(iphdr, lwip_htons((start / 8) | IP_MF));
+ }
+ IPH_TTL_SET(iphdr, 5);
+ IPH_PROTO_SET(iphdr, IP_PROTO_UDP);
+ IPH_CHKSUM_SET(iphdr, 0);
+ ip4_addr_copy(iphdr->src, *netif_ip4_addr(input_netif));
+ iphdr->src.addr = lwip_htonl(lwip_htonl(iphdr->src.addr) + 1);
+ ip4_addr_copy(iphdr->dest, *netif_ip4_addr(input_netif));
+ IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, sizeof(struct ip_hdr)));
+
+ err = ip4_input(p, input_netif);
+ if (err != ERR_OK) {
+ pbuf_free(p);
+ }
+ fail_unless(err == ERR_OK);
+ }
+}
+
+static err_t arpless_output(struct netif *netif, struct pbuf *p,
+ const ip4_addr_t *ipaddr) {
+ LWIP_UNUSED_ARG(ipaddr);
+ return netif->linkoutput(netif, p);
+}
+
+/* Setups/teardown functions */
+
+static void
+ip4_setup(void)
+{
+ lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
+}
+
+static void
+ip4_teardown(void)
+{
+ if (netif_list->loop_first != NULL) {
+ pbuf_free(netif_list->loop_first);
+ netif_list->loop_first = NULL;
+ }
+ netif_list->loop_last = NULL;
+ /* poll until all memory is released... */
+ tcpip_thread_poll_one();
+ lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
+ test_netif_remove();
+ netif_set_up(netif_get_loopif());
+}
+
+/* Test functions */
+START_TEST(test_ip4_frag)
+{
+ struct pbuf *data = pbuf_alloc(PBUF_IP, 8000, PBUF_RAM);
+ ip_addr_t peer_ip = IPADDR4_INIT_BYTES(192,168,0,5);
+ err_t err;
+ LWIP_UNUSED_ARG(_i);
+
+ linkoutput_ctr = 0;
+
+ /* Verify that 8000 byte payload is split into six packets */
+ fail_unless(data != NULL);
+ test_netif_add();
+ test_netif.output = arpless_output;
+ err = ip4_output_if_src(data, &test_ipaddr, ip_2_ip4(&peer_ip),
+ 16, 0, IP_PROTO_UDP, &test_netif);
+ fail_unless(err == ERR_OK);
+ fail_unless(linkoutput_ctr == 6);
+ fail_unless(linkoutput_byte_ctr == (8000 + (6 * IP_HLEN)));
+ pbuf_free(data);
+ test_netif_remove();
+}
+END_TEST
+
+START_TEST(test_ip4_reass)
+{
+ const u16_t ip_id = 128;
+ LWIP_UNUSED_ARG(_i);
+
+ memset(&lwip_stats.mib2, 0, sizeof(lwip_stats.mib2));
+
+ create_ip4_input_fragment(ip_id, 8*200, 200, 1);
+ fail_unless(lwip_stats.ip_frag.recv == 1);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 0*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 2);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 1*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 3);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 2*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 4);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 3*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 5);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 4*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 6);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 7*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 7);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 6*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 8);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 0);
+
+ create_ip4_input_fragment(ip_id, 5*200, 200, 0);
+ fail_unless(lwip_stats.ip_frag.recv == 9);
+ fail_unless(lwip_stats.ip_frag.err == 0);
+ fail_unless(lwip_stats.ip_frag.memerr == 0);
+ fail_unless(lwip_stats.ip_frag.drop == 0);
+ fail_unless(lwip_stats.mib2.ipreasmoks == 1);
+}
+END_TEST
+
+/* packets to 127.0.0.1 shall not be sent out to netif_default */
+START_TEST(test_127_0_0_1)
+{
+ ip4_addr_t localhost;
+ struct pbuf* p;
+ LWIP_UNUSED_ARG(_i);
+
+ linkoutput_ctr = 0;
+
+ test_netif_add();
+ netif_set_down(netif_get_loopif());
+
+ IP4_ADDR(&localhost, 127, 0, 0, 1);
+ p = pbuf_alloc(PBUF_IP, 10, PBUF_POOL);
+
+ if(ip4_output(p, netif_ip4_addr(netif_default), &localhost, 0, 0, IP_PROTO_UDP) != ERR_OK) {
+ pbuf_free(p);
+ }
+ fail_unless(linkoutput_ctr == 0);
+}
+END_TEST
+
+START_TEST(test_ip4addr_aton)
+{
+ ip4_addr_t ip_addr;
+
+ LWIP_UNUSED_ARG(_i);
+
+ fail_unless(ip4addr_aton("192.168.0.1", &ip_addr) == 1);
+ fail_unless(ip4addr_aton("192.168.0.0001", &ip_addr) == 1);
+ fail_unless(ip4addr_aton("192.168.0.zzz", &ip_addr) == 0);
+ fail_unless(ip4addr_aton("192.168.1", &ip_addr) == 1);
+ fail_unless(ip4addr_aton("192.168.0xd3", &ip_addr) == 1);
+ fail_unless(ip4addr_aton("192.168.0xz5", &ip_addr) == 0);
+ fail_unless(ip4addr_aton("192.168.095", &ip_addr) == 0);
+}
+END_TEST
+
+/* Test for bug #59364 */
+START_TEST(test_ip4_icmp_replylen_short)
+{
+ /* IP packet to 192.168.0.1 using proto 0x22 and 1 byte payload */
+ const u8_t unknown_proto[] = {
+ 0x45, 0x00, 0x00, 0x15, 0xd4, 0x31, 0x00, 0x00, 0xff, 0x22,
+ 0x66, 0x41, 0xc0, 0xa8, 0x00, 0x02, 0xc0, 0xa8, 0x00, 0x01,
+ 0xaa };
+ struct pbuf *p;
+ const int icmp_len = IP_HLEN + sizeof(struct icmp_hdr);
+ LWIP_UNUSED_ARG(_i);
+
+ linkoutput_ctr = 0;
+
+ test_netif_add();
+ test_netif.output = arpless_output;
+ p = pbuf_alloc(PBUF_IP, sizeof(unknown_proto), PBUF_RAM);
+ pbuf_take(p, unknown_proto, sizeof(unknown_proto));
+ fail_unless(ip4_input(p, &test_netif) == ERR_OK);
+
+ fail_unless(linkoutput_ctr == 1);
+ /* Verify outgoing ICMP packet has no extra data */
+ fail_unless(linkoutput_pkt_len == icmp_len + sizeof(unknown_proto));
+ fail_if(memcmp(&linkoutput_pkt[icmp_len], unknown_proto, sizeof(unknown_proto)));
+}
+END_TEST
+
+START_TEST(test_ip4_icmp_replylen_first_8)
+{
+ /* IP packet to 192.168.0.1 using proto 0x22 and 11 bytes payload */
+ const u8_t unknown_proto[] = {
+ 0x45, 0x00, 0x00, 0x1f, 0xd4, 0x31, 0x00, 0x00, 0xff, 0x22,
+ 0x66, 0x37, 0xc0, 0xa8, 0x00, 0x02, 0xc0, 0xa8, 0x00, 0x01,
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
+ 0xaa };
+ struct pbuf *p;
+ const int icmp_len = IP_HLEN + sizeof(struct icmp_hdr);
+ const int unreach_len = IP_HLEN + 8;
+ LWIP_UNUSED_ARG(_i);
+
+ linkoutput_ctr = 0;
+
+ test_netif_add();
+ test_netif.output = arpless_output;
+ p = pbuf_alloc(PBUF_IP, sizeof(unknown_proto), PBUF_RAM);
+ pbuf_take(p, unknown_proto, sizeof(unknown_proto));
+ fail_unless(ip4_input(p, &test_netif) == ERR_OK);
+
+ fail_unless(linkoutput_ctr == 1);
+ fail_unless(linkoutput_pkt_len == icmp_len + unreach_len);
+ fail_if(memcmp(&linkoutput_pkt[icmp_len], unknown_proto, unreach_len));
+}
+END_TEST
+
+/** Create the suite including all tests for this module */
+Suite *
+ip4_suite(void)
+{
+ testfunc tests[] = {
+ TESTFUNC(test_ip4_frag),
+ TESTFUNC(test_ip4_reass),
+ TESTFUNC(test_127_0_0_1),
+ TESTFUNC(test_ip4addr_aton),
+ TESTFUNC(test_ip4_icmp_replylen_short),
+ TESTFUNC(test_ip4_icmp_replylen_first_8),
+ };
+ return create_suite("IPv4", tests, sizeof(tests)/sizeof(testfunc), ip4_setup, ip4_teardown);
+}
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