/* * 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 generating human-readable representations of IP packets. */ #include "packet_to_string.h" #include #include #include #include "packet_parser.h" static void test_tcp_ipv4_packet_to_string(void) { /* An IPv4/GRE/IPv4/TCP packet. */ u8 data[] = { /* IPv4: */ 0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0xff, 0x2f, 0xb5, 0x75, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, /* GRE: */ 0x00, 0x00, 0x08, 0x00, /* IPv4, TCP: */ 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); int status = 0; char *dump = NULL, *expected = NULL; /* Test a DUMP_SHORT dump */ status = packet_to_string(packet, DUMP_SHORT, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv4 2.2.2.2 > 1.1.1.1: gre: " ". 1:1(0) ack 2202903899 win 257 " ""; assert(strcmp(dump, expected) == 0); free(dump); /* Test a DUMP_FULL dump */ status = packet_to_string(packet, DUMP_FULL, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv4 2.2.2.2 > 1.1.1.1: gre: " "192.0.2.1:53055 > 192.168.0.1:8080 " ". 1:1(0) ack 2202903899 win 257 " ""; assert(strcmp(dump, expected) == 0); free(dump); /* Test a DUMP_VERBOSE dump */ status = packet_to_string(packet, DUMP_VERBOSE, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv4 2.2.2.2 > 1.1.1.1: gre: " "192.0.2.1:53055 > 192.168.0.1:8080 " ". 1:1(0) ack 2202903899 win 257 " "" "\n" "0x0000: 45 00 00 54 00 00 00 00 ff 2f b5 75 02 02 02 02 " "\n" "0x0010: 01 01 01 01 00 00 08 00 45 00 00 3c 00 00 00 00 " "\n" "0x0020: ff 06 39 11 c0 00 02 01 c0 a8 00 01 cf 3f 1f 90 " "\n" "0x0030: 00 00 00 01 83 4d a5 5b a0 10 01 01 db 2d 00 00 " "\n" "0x0040: 05 0a 83 4d ab 03 83 4d b0 ab 08 0a 00 00 01 2c " "\n" "0x0050: 60 c2 18 20 " "\n"; assert(strcmp(dump, expected) == 0); free(dump); packet_free(packet); } static void test_tcp_ipv6_packet_to_string(void) { /* An IPv6/GRE/TCP/IPv6 packet. */ u8 data[] = { /* IPv6: */ 0x60, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x2f, 0xff, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x22, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x11, /* GRE: */ 0x00, 0x00, 0x86, 0xdd, /* IPv6, TCP: */ 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); int status = 0; char *dump = NULL, *expected = NULL; /* Test a DUMP_SHORT dump */ status = packet_to_string(packet, DUMP_SHORT, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv6 2::2222 > 1::1111: gre: " "S 0:0(0) win 32792 "; assert(strcmp(dump, expected) == 0); free(dump); /* Test a DUMP_FULL dump */ status = packet_to_string(packet, DUMP_FULL, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv6 2::2222 > 1::1111: gre: " "2001:db8::1:54242 > fd3d:fa7b:d17d::1:8080 " "S 0:0(0) win 32792 "; assert(strcmp(dump, expected) == 0); free(dump); /* Test a DUMP_VERBOSE dump */ status = packet_to_string(packet, DUMP_VERBOSE, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "ipv6 2::2222 > 1::1111: gre: " "2001:db8::1:54242 > fd3d:fa7b:d17d::1:8080 " "S 0:0(0) win 32792 \n" "0x0000: 60 00 00 00 00 4c 2f ff 00 02 00 00 00 00 00 00 " "\n" "0x0010: 00 00 00 00 00 00 22 22 00 01 00 00 00 00 00 00 " "\n" "0x0020: 00 00 00 00 00 00 11 11 00 00 86 dd 60 00 00 00 " "\n" "0x0030: 00 20 06 ff 20 01 0d b8 00 00 00 00 00 00 00 00 " "\n" "0x0040: 00 00 00 01 fd 3d fa 7b d1 7d 00 00 00 00 00 00 " "\n" "0x0050: 00 00 00 01 d3 e2 1f 90 00 00 00 00 00 00 00 00 " "\n" "0x0060: 80 02 80 18 06 60 00 00 02 04 03 e8 04 02 01 01 " "\n" "0x0070: 01 03 03 07 " "\n"; assert(strcmp(dump, expected) == 0); free(dump); packet_free(packet); } static void test_gre_mpls_tcp_ipv4_packet_to_string(void) { /* An IPv4/GRE/MPLS/IPv4/TCP packet. */ u8 data[] = { /* 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); int status = 0; char *dump = NULL, *expected = NULL; /* Test a DUMP_FULL dump */ status = packet_to_string(packet, DUMP_FULL, &dump, &error); assert(status == STATUS_OK); assert(error == NULL); printf("dump = '%s'\n", dump); expected = "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 " ""; assert(strcmp(dump, expected) == 0); free(dump); } int main(void) { test_tcp_ipv4_packet_to_string(); test_tcp_ipv6_packet_to_string(); test_gre_mpls_tcp_ipv4_packet_to_string(); return 0; }