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#include "unity.h"
#include "proto.h"
#include "log.h"
#include <string.h>
void test_begin_pings_bootstrap_node() {
struct message outbuff[10] = {0};
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
struct message* message_cursor = outbuff;
proto_begin(&dht, time(NULL), &message_cursor, outbuff+10);
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+1);
TEST_ASSERT_EQUAL(91, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:ad2:id20:BBBBBBBBBBBBBBBBBBBB6:target20:", outbuff[0].payload, 43);
TEST_ASSERT_EQUAL_CHAR_ARRAY("e1:q9:find_node1:t1:01:y1:qe", outbuff[0].payload+63, 28);
}
void test_response_from_initial_probe() {
struct message outbuff[2] = {0};
struct sockaddr_storage remote;
socklen_t remote_len;
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, time(NULL), &message_cursor, outbuff+2);
remote_len = outbuff[0].dest_len;
memcpy(&remote, &outbuff[0].dest, remote_len);
}
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes26:bbbbbbbbbbbbbbbbbbbb\xFF\xFF\xFF\xFF\x00\x00""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), (struct sockaddr_in*)&remote, remote_len, 10, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR_MESSAGE(message_cursor, outbuff+1, "Sends one packet");
TEST_ASSERT_EQUAL(91, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:ad2:id20:BBBBBBBBBBBBBBBBBBBB6:target20:", outbuff[0].payload, 43);
TEST_ASSERT_EQUAL_CHAR_ARRAY("e1:q9:find_node1:t1:11:y1:qe", outbuff[0].payload+63, 28);
// The queried node gets added to the routing table
struct nodeid other = (struct nodeid){.inner={0x61616161, 0x61616161, 0x61616161, 0x61616161, 0x61616161}};
struct entry* entry = routing_get(&other);
TEST_ASSERT_NOT_NULL(entry);
TEST_ASSERT_EQUAL(((struct sockaddr_in*)&remote)->sin_addr.s_addr, entry->addr.ip);
TEST_ASSERT_EQUAL(((struct sockaddr_in*)&remote)->sin_port, entry->addr.port);
TEST_ASSERT_EQUAL(PROTO_UNCTM+10, entry->expire);
}
void test_reponse_from_wrong_ip() {
struct message outbuff[2] = {0};
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, time(NULL), &message_cursor, outbuff+2);
}
// This is fragile, since the ip of the bootstrap node could change, and we
// look it up from DNS. Although it pretty unlikely that it would change to
// this ip
struct sockaddr_in remote;
remote.sin_family = AF_INET;
inet_pton(AF_INET, "255.255.255.255", &remote.sin_addr.s_addr);
remote.sin_port = htons(6881);
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes26:bbbbbbbbbbbbbbbbbbbb\xFF\xFF\xFF\xFF\x00\x00""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), &remote, sizeof(remote), 0, &message_cursor, outbuff+2);
// We shouldn't send any packets, since the response is rejected
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff);
// Since the ip was wrong we should not have accepted the node into the
// rounting table
struct nodeid other = (struct nodeid){.inner={0x61616161, 0x61616161, 0x61616161, 0x61616161, 0x61616161}};
struct entry* entry = routing_get(&other);
TEST_ASSERT_NULL(entry);
}
void test_ping() {
struct message outbuff[2] = {0};
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, time(NULL), &message_cursor, outbuff+2);
}
struct sockaddr_in remote;
remote.sin_family = AF_INET;
inet_pton(AF_INET, "255.255.255.255", &remote.sin_addr.s_addr);
remote.sin_port = htons(6881);
char buff[] = "d1:ad2:id20:abcdefghij0123456789e1:q4:ping1:t2:aa1:y1:qe";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), &remote, sizeof(remote), 0, &message_cursor, outbuff+2);
// We should have sent a response
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+1);
TEST_ASSERT_EQUAL(48, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:t2:aa1:y1:r1:rd2:id20:BBBBBBBBBBBBBBBBBBBBee", outbuff[0].payload, 47);
}
void test_unknown_method() {
struct message outbuff[2] = {0};
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, time(NULL), &message_cursor, outbuff+2);
}
struct sockaddr_in remote;
remote.sin_family = AF_INET;
inet_pton(AF_INET, "255.255.255.255", &remote.sin_addr.s_addr);
remote.sin_port = htons(6881);
char buff[] = "d1:q4:fake1:t2:aa1:y1:qe";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), &remote, sizeof(remote), 0, &message_cursor, outbuff+2);
// We should have sent a response
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+1);
TEST_ASSERT_EQUAL(42, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:t2:aa1:y1:e1:eli204e14:Unknown Methodee", outbuff[0].payload, 42);
}
void test_note_times_out() {
routing_flush();
struct message outbuff[2] = {0};
struct sockaddr_storage remote;
socklen_t remote_len;
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, 0, &message_cursor, outbuff+2);
remote_len = outbuff[0].dest_len;
memcpy(&remote, &outbuff[0].dest, remote_len);
}
// The node responds to the ping at t=5
{
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes26:bbbbbbbbbbbbbbbbbbbb\xFF\xFF\xFF\xFF\x00\x00""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), (struct sockaddr_in*)&remote, remote_len, 5, &message_cursor, outbuff+2);
}
// 15 minutes later a timeout is fired
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)&remote, remote_len, 905, &message_cursor, outbuff+2);
// Which should create a retry ping and a ping for the (now) uncertain node
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+2);
TEST_ASSERT_EQUAL(91, outbuff[1].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:ad2:id20:BBBBBBBBBBBBBBBBBBBB6:target20:", outbuff[1].payload, 43);
TEST_ASSERT_EQUAL_CHAR_ARRAY("e1:q9:find_node1:t1:01:y1:qe", outbuff[1].payload+63, 28);
}
void test_response_after_retry() {
struct message outbuff[10] = {0};
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, 0, &message_cursor, outbuff+2);
}
// After TMOUT seconds we retry the ping
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, PROTO_TMOUT, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+1);
TEST_ASSERT_EQUAL(91, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:ad2:id20:BBBBBBBBBBBBBBBBBBBB6:target20:", outbuff[0].payload, 43);
TEST_ASSERT_EQUAL_CHAR_ARRAY("e1:q9:find_node1:t1:01:y1:qe", outbuff[0].payload+63, 28);
}
void test_remove_from_routing_after_3_retries() {
struct message outbuff[10] = {0};
time_t now = 0;
struct sockaddr_storage remote;
socklen_t remote_len;
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
struct nodeid other = (struct nodeid){.inner={0x61616161, 0x61616161, 0x61616161, 0x61616161, 0x61616161}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, 0, &message_cursor, outbuff+2);
remote_len = outbuff[0].dest_len;
memcpy(&remote, &outbuff[0].dest, remote_len);
}
now += 10;
{
// The node responds
// We return no new nodes to stop any new pings from going out
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes0:""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), (struct sockaddr_in*)&remote, remote_len, now, &message_cursor, outbuff+2);
}
struct entry* entry = routing_get(&other);
TEST_ASSERT_NOT_NULL(entry);
now += PROTO_UNCTM;
{
// The node becomes uncertain
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, now, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR_MESSAGE(message_cursor, outbuff+1, "Ping was not sent");
}
now += PROTO_TMOUT;
{
// 1st retry
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, now, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR_MESSAGE(message_cursor, outbuff+1, "Ping was not sent");
}
now += PROTO_TMOUT;
{
// 2nd retry
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, now, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR_MESSAGE(message_cursor, outbuff+1, "Ping was not sent");
}
now += PROTO_TMOUT;
// Drop the node
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, now, &message_cursor, outbuff+2);
TEST_ASSERT_EQUAL_PTR_MESSAGE(message_cursor, outbuff, "The timeout should send a message");
entry = routing_get(&other);
TEST_ASSERT_NULL(entry);
}
void test_ping_node_when_uncertain() {
struct message outbuff[10] = {0};
time_t now = 0;
struct sockaddr_storage remote;
socklen_t remote_len;
struct dht dht;
dht.self = (struct nodeid){.inner={0x42424242, 0x42424242, 0x42424242, 0x42424242, 0x42424242}};
struct nodeid other = (struct nodeid){.inner={0x61616161, 0x61616161, 0x61616161, 0x61616161, 0x61616161}};
{
struct message* message_cursor = outbuff;
proto_begin(&dht, 0, &message_cursor, outbuff+2);
remote_len = outbuff[0].dest_len;
memcpy(&remote, &outbuff[0].dest, remote_len);
}
now += 10;
{
// The node responds
// We return no new nodes to stop any new pings from going out
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes0:""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), (struct sockaddr_in*)&remote, remote_len, now, &message_cursor, outbuff+2);
}
struct entry* entry = routing_get(&other);
TEST_ASSERT_NOT_NULL(entry);
now += PROTO_UNCTM;
{
// The node becomes uncertain
struct message* message_cursor = outbuff;
proto_run(&dht, NULL, 0, (struct sockaddr_in*)NULL, 0, now, &message_cursor, outbuff+2);
// Which should create a ping
TEST_ASSERT_EQUAL_PTR(message_cursor, outbuff+1);
TEST_ASSERT_EQUAL(91, outbuff[0].payload_len);
TEST_ASSERT_EQUAL_CHAR_ARRAY("d1:ad2:id20:BBBBBBBBBBBBBBBBBBBB6:target20:", outbuff[0].payload, 43);
TEST_ASSERT_EQUAL_CHAR_ARRAY("e1:q9:find_node1:t1:01:y1:qe", outbuff[0].payload+63, 28);
}
now += 5;
{
// The node responds
char buff[] = "d1:y1:r1:t1:01:rd2:id20:aaaaaaaaaaaaaaaaaaaa5:nodes0:""ee";
struct message* message_cursor = outbuff;
proto_run(&dht, buff, sizeof(buff), (struct sockaddr_in*)&remote, remote_len, now, &message_cursor, outbuff+2);
// The routing table entry should have its expiry time updated
struct entry* entry = routing_get(&other);
TEST_ASSERT_NOT_NULL(entry);
TEST_ASSERT_GREATER_THAN(now, entry->expire);
}
}
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