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Diffstat (limited to 'tests/slhc/slhc_test.c')
-rw-r--r-- | tests/slhc/slhc_test.c | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/tests/slhc/slhc_test.c b/tests/slhc/slhc_test.c deleted file mode 100644 index d2e1cd9dc..000000000 --- a/tests/slhc/slhc_test.c +++ /dev/null @@ -1,272 +0,0 @@ -/* Test SLHC/RFC1144 TCP/IP Header compression/decompression */ - -/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> - * All Rights Reserved - * - * Author: Philipp Maier - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 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 Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <openbsc/slhc.h> -#include <openbsc/debug.h> - -#include <osmocom/core/talloc.h> -#include <osmocom/core/utils.h> - -#include <osmocom/core/application.h> - -#include <stdio.h> -#include <string.h> -#include <arpa/inet.h> - -/* Number of compression slots (S0-1) */ -#define SLOTS 8 - -/* Maximum packet bytes to display */ -#define DISP_MAX_BYTES 100 - -/* Sample packets to test with */ -#define PACKETS_LEN 15 -char *packets[] = { - /* With TCP Option 10 (Timestamps) in place (forces UNCOMPRESSED_TCP) */ - "4510004046dd40004006a9a7c0a8646ec0a864640017ad8b81980100f3ac984d801800e32a1600000101080a000647de06d1bf5efffd18fffd20fffd23fffd27", - "4510005b46de40004006a98bc0a8646ec0a864640017ad8b8198010cf3ac984d801800e3867500000101080a000647df06d1bf61fffb03fffd1ffffd21fffe22fffb05fffa2001fff0fffa2301fff0fffa2701fff0fffa1801fff0", - "4510003746df40004006a9aec0a8646ec0a864640017ad8b81980133f3ac989f801800e35fd700000101080a000647e106d1bf63fffd01", - "4510003746e040004006a9adc0a8646ec0a864640017ad8b81980136f3ac98a2801800e35fd200000101080a000647e106d1bf64fffb01", - "4510007446e140004006a96fc0a8646ec0a864640017ad8b81980139f3ac98a5801800e37b9b00000101080a000647e206d1bf640d0a2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d0d0a57656c6c636f6d6520746f20706f6c6c75780d0a2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d0d0a0d0a", - "4510004246e240004006a9a0c0a8646ec0a864640017ad8b81980179f3ac98a5801800e3dab000000101080a000647ec06d1bf6f706f6c6c7578206c6f67696e3a20", - /* Regular TCP packets (COMPRESSED_TCP) */ - "4510003446dd40004006a9b3c0a8646ec0a864640017ad8b81980100f3ac984d501800e371410000fffd18fffd20fffd23fffd27", - "4510004f46de40004006a997c0a8646ec0a864640017ad8b8198010cf3ac984d501800e3cda40000fffb03fffd1ffffd21fffe22fffb05fffa2001fff0fffa2301fff0fffa2701fff0fffa1801fff0", - "4510002b46df40004006a9bac0a8646ec0a864640017ad8b81980133f3ac989f501800e3a70a0000fffd01", - "4510002b46e040004006a9b9c0a8646ec0a864640017ad8b81980136f3ac98a2501800e3a7060000fffb01", - "4510006846e140004006a97bc0a8646ec0a864640017ad8b81980139f3ac98a5501800e3c2d000000d0a2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d0d0a57656c6c636f6d6520746f20706f6c6c75780d0a2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d0d0a0d0a", - "4510003646e240004006a9acc0a8646ec0a864640017ad8b81980179f3ac98a5501800e321fb0000706f6c6c7578206c6f67696e3a20", - /* UDP packets (TYPE_IP */ - "450000396e0b40004011a0310a0901650a09170105da003500255489a60f01000001000000000000076f736d6f636f6d036f72670000010001", - "450000dc9eeb00004011aeae0a0917010a090165003505da00c83fbaa60f81800001000100030004076f736d6f636f6d036f72670000010001c00c00010001000079be0004904c2b4cc00c000200010000173d00130773756e6265616d08676e756d6f6e6b73c014c00c000200010000173d000603646e73c041c00c000200010000173d000a0767616e65736861c041c058000100010000173d0004d55f2e45c058001c00010000173d0010200107800045f0460000000000690001c06a0001000100006a710004d55f1b78c039000100010000173d000453ecb2cb", - "45000037652340004011a91b0a0901650a091701ef1b0035002376a2c3910100000100000000000006676f6f676c650264650000010001", - "0050b6162c10000db93a3ff908004500004726a6000038114083080808080a0901650035ef1b00338a8cc3918180000100010000000006676f6f676c650264650000010001c00c000100010000012b0004d83ad503", -}; - -/* Compress a packet using Van Jacobson RFC1144 header compression */ -static int compress(uint8_t *data_o, uint8_t *data_i, int len, - struct slcompress *comp) -{ - uint8_t *comp_ptr; /* Not used */ - int compr_len; - - /* Create a working copy of the incoming data */ - memcpy(data_o, data_i, len); - - /* Run compressor */ - compr_len = slhc_compress(comp, data_i, len, data_o, &comp_ptr, 0); - return compr_len; -} - -/* Expand a packet using Van Jacobson RFC1144 header compression */ -static int expand(uint8_t *data_o, uint8_t *data_i, int len, - struct slcompress *comp) -{ - int data_decompressed_len; - - /* Create a working copy of the incoming data */ - memcpy(data_o, data_i, len); - - /* Handle an uncompressed packet (learn header information */ - if ((data_i[0] & SL_TYPE_UNCOMPRESSED_TCP) == SL_TYPE_UNCOMPRESSED_TCP) { - data_o[0] &= 0x4F; - data_decompressed_len = slhc_remember(comp, data_o, len); - return data_decompressed_len; - } - - /* Uncompress compressed packets */ - else if (data_o[0] & SL_TYPE_COMPRESSED_TCP) { - data_decompressed_len = slhc_uncompress(comp, data_o, len); - return data_decompressed_len; - } - - /* Regular or unknown packets will not be touched */ - return len; -} - -/* Calculate IP Header checksum */ -static uint16_t calc_ip_csum(uint8_t *data, int len) -{ - int i; - uint32_t accumulator = 0; - uint16_t *pointer = (uint16_t *) data; - - for (i = len; i > 1; i -= 2) { - accumulator += *pointer; - pointer++; - } - - if (len % 2) - accumulator += *pointer; - - accumulator = (accumulator & 0xffff) + ((accumulator >> 16) & 0xffff); - accumulator += (accumulator >> 16) & 0xffff; - return (~accumulator); -} - -/* Calculate TCP/IP checksum */ -static uint16_t calc_tcpip_csum(const void *ctx, uint8_t *packet, int len) -{ - uint8_t *buf; - uint16_t csum; - - buf = talloc_zero_size(ctx, len); - memset(buf, 0, len); - memcpy(buf, packet + 12, 8); - buf[9] = packet[9]; - buf[11] = (len - 20) & 0xFF; - buf[10] = (len - 20) >> 8 & 0xFF; - memcpy(buf + 12, packet + 20, len - 20); - csum = calc_ip_csum(buf, len - 20 + 12); - talloc_free(buf); - return csum; -} - -/* Check TCP/IP packet */ -static void check_packet(const void *ctx, uint8_t *packet, int len) -{ - /* Check IP header */ - OSMO_ASSERT(len > 20); - OSMO_ASSERT(calc_ip_csum(packet, 20) == 0); - - printf("packet[9]=%02x\n", packet[9]); - - /* Check TCP packet */ - if (packet[9] != 0x06) - return; - OSMO_ASSERT(len > 40); - OSMO_ASSERT(calc_tcpip_csum(ctx, packet, len) == 0); -} - -/* Compress / Decompress packets */ -static void test_slhc(const void *ctx) -{ - char packet_ascii[2048]; - int i; - - struct slcompress *comp; - uint8_t packet[1024]; - int packet_len; - uint8_t packet_compr[1024]; - int packet_compr_len; - uint8_t packet_decompr[1024]; - int packet_decompr_len; - - printf("Allocating compression state...\n"); - comp = slhc_init(ctx, SLOTS, SLOTS); - OSMO_ASSERT(comp); - - for (i = 0; i < PACKETS_LEN; i++) { - printf("Testing with packet No. %d\n", i); - - /* Read input file */ - memset(packet_ascii, 0, sizeof(packet_ascii)); - memset(packet, 0, sizeof(packet)); - memset(packet_compr, 0, sizeof(packet_compr)); - memset(packet_decompr, 0, sizeof(packet_decompr)); - - OSMO_ASSERT(strlen(packets[i]) < sizeof(packet_ascii)); - strcpy(packet_ascii, packets[i]); - - packet_len = - osmo_hexparse(packet_ascii, packet, sizeof(packet)); - check_packet(ctx, packet, packet_len); - - /* Run compression/decompression algorithm */ - printf("Compressing...\n"); - packet_compr_len = - compress(packet_compr, packet, packet_len, comp); - printf("Decompressing...\n"); - packet_decompr_len = - expand(packet_decompr, packet_compr, packet_compr_len, - comp); - OSMO_ASSERT(packet_decompr_len == packet_len); - check_packet(ctx, packet_decompr, packet_decompr_len); - - /* Display results */ - printf("Results:\n"); - if (packet_compr_len > DISP_MAX_BYTES) - packet_compr_len = DISP_MAX_BYTES; - if (packet_len > DISP_MAX_BYTES) - packet_len = DISP_MAX_BYTES; - if (packet_decompr_len > DISP_MAX_BYTES) - packet_decompr_len = DISP_MAX_BYTES; - printf("Original Packet: (%i bytes) %s\n", packet_len, - osmo_hexdump_nospc(packet, packet_len)); - printf("DecompressedPacket: (%i bytes) %s\n", - packet_decompr_len, osmo_hexdump_nospc(packet_decompr, - packet_decompr_len)); - printf("CompressedPacket: (%i bytes) %s\n", packet_compr_len, - osmo_hexdump_nospc(packet_compr, packet_compr_len)); - slhc_o_status(comp); - slhc_o_status(comp); - - printf("\n"); - } - - printf("Freeing compression state...\n"); - slhc_free(comp); - printf("\n"); -} - -static struct log_info_cat gprs_categories[] = { - [DSNDCP] = { - .name = "DSNDCP", - .description = - "GPRS Sub-Network Dependent Control Protocol (SNDCP)", - .enabled = 1,.loglevel = LOGL_DEBUG, - }, - [DSLHC] = { - .name = "DSLHC", - .description = - "Van Jacobson RFC1144 TCP/IP header compression (SLHC)", - .enabled = 1,.loglevel = LOGL_DEBUG, - } -}; - -static struct log_info info = { - .cat = gprs_categories, - .num_cat = ARRAY_SIZE(gprs_categories), -}; - -int main(int argc, char **argv) -{ - void *ctx; - - osmo_init_logging(&info); - - ctx = talloc_named_const(NULL, 0, "slhc_ctx"); - - test_slhc(ctx); - - printf("Done\n"); - - talloc_report_full(ctx, stderr); - OSMO_ASSERT(talloc_total_blocks(ctx) == 1); - return 0; -} - -/* stubs */ -struct osmo_prim_hdr; -int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) -{ - abort(); -} |