diff options
Diffstat (limited to 'test/packetdrill/packet_parser_test.c')
| -rw-r--r-- | test/packetdrill/packet_parser_test.c | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/test/packetdrill/packet_parser_test.c b/test/packetdrill/packet_parser_test.c new file mode 100644 index 0000000..d0d33d9 --- /dev/null +++ b/test/packetdrill/packet_parser_test.c @@ -0,0 +1,484 @@ +/* + * Copyright 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ +/* + * Author: ncardwell@google.com (Neal Cardwell) + * + * Test for parsing IP packets. + */ + +#include "assert.h" +#include "packet_parser.h" + +#include <stdlib.h> +#include <string.h> + +static void test_parse_tcp_ipv4_packet(void) +{ + /* A TCP/IPv4 packet. */ + u8 data[] = { + /* 192.0.2.1:53055 > 192.168.0.1:8080 + * . 1:1(0) ack 2202903899 win 257 + * <sack 2202905347:2202906795,TS val 300 ecr 1623332896> + */ + 0x45, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x00, + 0xff, 0x06, 0x39, 0x11, 0xc0, 0x00, 0x02, 0x01, + 0xc0, 0xa8, 0x00, 0x01, 0xcf, 0x3f, 0x1f, 0x90, + 0x00, 0x00, 0x00, 0x01, 0x83, 0x4d, 0xa5, 0x5b, + 0xa0, 0x10, 0x01, 0x01, 0xdb, 0x2d, 0x00, 0x00, + 0x05, 0x0a, 0x83, 0x4d, 0xab, 0x03, 0x83, 0x4d, + 0xb0, 0xab, 0x08, 0x0a, 0x00, 0x00, 0x01, 0x2c, + 0x60, 0xc2, 0x18, 0x20 + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv4 *expected_ipv4 = (struct ipv4 *)(packet->buffer); + struct tcp *expected_tcp = (struct tcp *)(expected_ipv4 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == expected_ipv4); + assert(packet->ipv6 == NULL); + assert(packet->tcp == expected_tcp); + assert(packet->udp == NULL); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_tcp_ipv6_packet(void) +{ + /* A TCP/IPv6 packet. */ + u8 data[] = { + /* 2001:db8::1:54242 > fd3d:fa7b:d17d::1:8080 + * S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> + */ + 0x60, 0x00, 0x00, 0x00, 0x00, 0x20, 0x06, 0xff, + 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + 0xfd, 0x3d, 0xfa, 0x7b, 0xd1, 0x7d, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + 0xd3, 0xe2, 0x1f, 0x90, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x80, 0x18, + 0x06, 0x60, 0x00, 0x00, 0x02, 0x04, 0x03, 0xe8, + 0x04, 0x02, 0x01, 0x01, 0x01, 0x03, 0x03, 0x07, + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv6 *expected_ipv6 = (struct ipv6 *)(packet->buffer); + struct tcp *expected_tcp = (struct tcp *)(expected_ipv6 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == NULL); + assert(packet->ipv6 == expected_ipv6); + assert(packet->tcp == expected_tcp); + assert(packet->udp == NULL); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_udp_ipv4_packet(void) +{ + /* A UDP/IPv4 packet. */ + u8 data[] = { + /* 192.0.2.1.8080 > 192.168.0.1.57845: UDP, length 4 */ + 0x45, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, + 0xff, 0x11, 0x39, 0x22, 0xc0, 0x00, 0x02, 0x01, + 0xc0, 0xa8, 0x00, 0x01, 0x1f, 0x90, 0xe1, 0xf5, + 0x00, 0x0c, 0x7b, 0xa5, 0x00, 0x00, 0x00, 0x00, + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv4 *expected_ipv4 = (struct ipv4 *)(packet->buffer); + struct udp *expected_udp = (struct udp *)(expected_ipv4 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == expected_ipv4); + assert(packet->ipv6 == NULL); + assert(packet->tcp == NULL); + assert(packet->udp == expected_udp); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + + +static void test_parse_udp_ipv6_packet(void) +{ + /* A UDP/IPv6 packet. */ + u8 data[] = { + /* 2001:db8::1.8080 > fd3d:fa7b:d17d::1.51557: UDP, length 4 */ + 0x60, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x11, 0xff, + 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + 0xfd, 0x3d, 0xfa, 0x7b, 0xd1, 0x7d, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + 0x1f, 0x90, 0xc9, 0x65, 0x00, 0x0c, 0x1f, 0xee, + 0x00, 0x00, 0x00, 0x00, + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv6 *expected_ipv6 = (struct ipv6 *)(packet->buffer); + struct udp *expected_udp = (struct udp *)(expected_ipv6 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == NULL); + assert(packet->ipv6 == expected_ipv6); + assert(packet->tcp == NULL); + assert(packet->udp == expected_udp); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_ipv4_gre_ipv4_tcp_packet(void) +{ + u8 *p = NULL; + int i = 0; + + /* An IPv4/GRE/IPv4/TCP packet. */ + u8 data[] = { + /* IP 2.2.2.2 > 1.1.1.1: GREv0, length 48: + IP 192.0.2.1.47078 > 192.168.0.1.8080: + . 2:6(4) ack 1 win 123 */ + 0x45, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x00, + 0xff, 0x2f, 0xb5, 0x85, 0x02, 0x02, 0x02, 0x02, + 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x08, 0x00, + 0x45, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x00, + 0xff, 0x06, 0x39, 0x21, 0xc0, 0x00, 0x02, 0x01, + 0xc0, 0xa8, 0x00, 0x01, 0xb7, 0xe6, 0x1f, 0x90, + 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x01, + 0x50, 0x10, 0x00, 0x7b, 0x55, 0x31, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00 + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + p = packet->buffer; + i = 0; /* outer most layer, 0 */ + + assert(packet->headers[i].type == HEADER_IPV4); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == sizeof(struct ipv4)); + p += packet->headers[i].header_bytes; + i++; + + assert(packet->headers[i].type == HEADER_GRE); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == GRE_MINLEN); + p += packet->headers[i].header_bytes; + i++; + + struct ipv4 *expected_inner_ipv4 = (struct ipv4 *)p; + assert(packet->headers[i].type == HEADER_IPV4); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == sizeof(struct ipv4)); + p += packet->headers[i].header_bytes; + i++; + + struct tcp *expected_tcp = (struct tcp *)p; + assert(packet->headers[i].type == HEADER_TCP); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == sizeof(struct tcp)); + p += packet->headers[i].header_bytes; + i++; + + assert(packet->headers[i].type == HEADER_NONE); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == expected_inner_ipv4); + assert(packet->ipv6 == NULL); + assert(packet->tcp == expected_tcp); + assert(packet->udp == NULL); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_ipv4_gre_mpls_ipv4_tcp_packet(void) +{ + u8 *p = NULL; + int i = 0; + + /* An IPv4/GRE/MPLS/IPv4/TCP packet. */ + u8 data[] = { + /* ipv4 192.168.0.1 > 192.0.2.2: gre: + mpls + (label 0, tc 0, ttl 0) + (label 1048575, tc 7, [S], ttl 255): + 192.168.0.1:8080 > 192.0.2.1:56268 + F. 2072102268:2072102268(0) ack 1 win 453 + <nop,nop,TS val 117573699 ecr 5> + */ + + /* IPv4: */ + 0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x40, 0x00, + 0x40, 0x2f, 0xb7, 0xcf, 0xc0, 0xa8, 0x00, 0x01, + 0xc0, 0x00, 0x02, 0x02, + /* GRE: */ + 0x00, 0x00, 0x88, 0x47, + /* MPLS: */ + 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, + /* IPv4, TCP: */ + 0x45, 0x00, 0x00, 0x34, 0x86, 0x99, 0x40, 0x00, + 0x40, 0x06, 0x31, 0x80, 0xc0, 0xa8, 0x00, 0x01, + 0xc0, 0x00, 0x02, 0x01, 0x1f, 0x90, 0xdb, 0xcc, + 0x7b, 0x81, 0xc5, 0x7c, 0x00, 0x00, 0x00, 0x01, + 0x80, 0x11, 0x01, 0xc5, 0xa6, 0xa6, 0x00, 0x00, + 0x01, 0x01, 0x08, 0x0a, 0x07, 0x02, 0x08, 0x43, + 0x00, 0x00, 0x00, 0x05 + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + p = packet->buffer; + i = 0; /* outer most layer, 0 */ + + assert(packet->headers[i].type == HEADER_IPV4); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == sizeof(struct ipv4)); + p += packet->headers[i].header_bytes; + i++; + + assert(packet->headers[i].type == HEADER_GRE); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == GRE_MINLEN); + p += packet->headers[i].header_bytes; + i++; + + assert(packet->headers[i].type == HEADER_MPLS); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == 2*sizeof(struct mpls)); + p += packet->headers[i].header_bytes; + i++; + + struct ipv4 *expected_inner_ipv4 = (struct ipv4 *)p; + assert(packet->headers[i].type == HEADER_IPV4); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == sizeof(struct ipv4)); + p += packet->headers[i].header_bytes; + i++; + + struct tcp *expected_tcp = (struct tcp *)p; + assert(packet->headers[i].type == HEADER_TCP); + assert(packet->headers[i].h.ptr == p); + assert(packet->headers[i].header_bytes == + sizeof(struct tcp) + TCPOLEN_TIMESTAMP + 2); /* 2 for 2 NOPs */ + p += packet->headers[i].header_bytes; + i++; + + assert(packet->headers[i].type == HEADER_NONE); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == expected_inner_ipv4); + assert(packet->ipv6 == NULL); + assert(packet->tcp == expected_tcp); + assert(packet->udp == NULL); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_icmpv4_packet(void) +{ + /* An ICMPv4 packet. */ + u8 data[] = { + /* 192.168.1.101:0 > 192.168.1.103:0 + * icmpv4 echo request, id 10960, seq 1, length 8 + */ + 0x45, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x40, 0x00, + 0x40, 0x01, 0xb6, 0xc4, 0xc0, 0xa8, 0x01, 0x65, + 0xc0, 0xa8, 0x01, 0x67, 0x08, 0x00, 0xcd, 0x2e, + 0x2a, 0xd0, 0x00, 0x01, + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv4 *expected_ipv4 = (struct ipv4 *)(packet->buffer); + struct icmpv4 *expected_icmpv4 = (struct icmpv4 *)(expected_ipv4 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == expected_ipv4); + assert(packet->ipv6 == NULL); + assert(packet->tcp == NULL); + assert(packet->udp == NULL); + assert(packet->icmpv4 == expected_icmpv4); + assert(packet->icmpv6 == NULL); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +static void test_parse_icmpv6_packet(void) +{ + /* An ICMPv6 packet. */ + u8 data[] = { + /* IP6 fd6b:6bbb:34a1::2 > fd6b:6bbb:34a1::1: ICMP6, + * echo request, seq 1, length 64 + */ + /* IPv6: */ + 0x60, 0x00, 0x00, 0x00, 0x00, 0x40, 0x3a, 0x40, + 0xfd, 0x6b, 0x6b, 0xbb, 0x34, 0xa1, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, + 0xfd, 0x6b, 0x6b, 0xbb, 0x34, 0xa1, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + /* ICMPv6: Echo Request */ + 0x80, 0x00, 0xb7, 0x44, 0x74, 0x7f, 0x00, 0x01, + 0x08, 0xb7, 0xc9, 0x52, 0x4d, 0x1f, 0x0e, 0x00, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 + }; + + struct packet *packet = packet_new(sizeof(data)); + + /* Populate and parse a packet */ + memcpy(packet->buffer, data, sizeof(data)); + char *error = NULL; + enum packet_parse_result_t result = + parse_packet(packet, sizeof(data), PACKET_LAYER_3_IP, + &error); + assert(result == PACKET_OK); + assert(error == NULL); + + struct ipv6 *expected_ipv6 = (struct ipv6 *)(packet->buffer); + struct icmpv6 *expected_icmpv6 = (struct icmpv6 *)(expected_ipv6 + 1); + + assert(packet->ip_bytes == sizeof(data)); + assert(packet->ipv4 == NULL); + assert(packet->ipv6 == expected_ipv6); + assert(packet->tcp == NULL); + assert(packet->udp == NULL); + assert(packet->icmpv4 == NULL); + assert(packet->icmpv6 == expected_icmpv6); + + assert(packet->time_usecs == 0); + assert(packet->flags == 0); + + packet_free(packet); +} + +int main(void) +{ + test_parse_tcp_ipv4_packet(); + test_parse_tcp_ipv6_packet(); + test_parse_udp_ipv4_packet(); + test_parse_udp_ipv6_packet(); + test_parse_ipv4_gre_ipv4_tcp_packet(); + test_parse_ipv4_gre_mpls_ipv4_tcp_packet(); + test_parse_icmpv4_packet(); + test_parse_icmpv6_packet(); + + return 0; +} |