89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include "packet.h"
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int main(int argc, char** argv) {
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if (argc != 3) {
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fprintf(stderr, "Usage %s ./cap.0 ./cap.1\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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uint8_t verbose = 0;
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FILE *fd[2]; size_t sz[2];
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for (int i = 0; i < 2; i++) {
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if ((fd[i] = fopen(argv[i+1], "r")) == NULL) {
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perror("Unable to open file");
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exit(EXIT_FAILURE);
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}
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fseek(fd[i], 0, SEEK_END);
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sz[i] = ftell(fd[i]);
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fseek(fd[i], 0, SEEK_SET);
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}
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if (sz[0] != sz[1]) {
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printf("[!!] %s has %ld entries, %s has %ld entries\n",
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argv[1],
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sz[0]/sizeof(struct buffer_packet),
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argv[2],
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sz[1]/sizeof(struct buffer_packet));
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} else if (verbose) {
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printf("[OK] %s and %s have %ld entries\n",
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argv[1],
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argv[2],
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sz[0]/sizeof(struct buffer_packet));
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}
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size_t to_read = sz[0] < sz[1] ? sz[0] : sz[1];
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size_t to_read_obj = to_read / sizeof(struct buffer_packet);
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uint16_t expected_id = 0;
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struct buffer_packet bpread[2];
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for (size_t c = 0; c < to_read_obj; c++) {
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for (int i = 0; i < 2; i++) fread(&bpread[i], sizeof(struct buffer_packet), 1, fd[i]);
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/*if (expected_id != bpread[0].ip.ap.fmt.content.clear.id || expected_id != bpread[1].ip.ap.fmt.content.clear.id) {
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printf("[!!] expected id is %d, %s has id %d, %s has id %d\n",
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expected_id,
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argv[1],
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bpread[0].ip.ap.fmt.content.clear.id,
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argv[2],
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bpread[1].ip.ap.fmt.content.clear.id);
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}*/
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size_t s1 = bpread[0].ip.ap.fmt.headers.size, s2 = bpread[1].ip.ap.fmt.headers.size;
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uint8_t is_same_size = s1 == s2;
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if (!is_same_size) {
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printf("[!!] %s packet has size %d, %s packet has size %d for expected id %d\n",
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argv[1],
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bpread[0].ip.ap.fmt.headers.size,
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argv[2],
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bpread[1].ip.ap.fmt.headers.size,
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expected_id);
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} else if (verbose) {
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printf("[OK] %s and %s packets for expected id %d have size %d\n",
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argv[1],
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argv[2],
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expected_id,
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bpread[0].ip.ap.fmt.headers.size);
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}
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size_t max_size = s1 > s2 ? s1 : s2;
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for (size_t idx = sizeof(bpread[0].ip.ap.fmt.headers) + sizeof(bpread[0].ip.ap.fmt.content.clear) - sizeof(char); idx < max_size; idx++) {
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char e1 = (&bpread[0].ip.ap.raw)[idx], e2 = (&bpread[1].ip.ap.raw)[idx];
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if (e1 != e2) {
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printf("[!!] for expected id %d, byte 0x%04x is different: 0x%02x vs 0x%02x\n", expected_id, (uint16_t)idx, (uint8_t)e1, (uint8_t)e2);
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}
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}
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expected_id++;
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}
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for (int i = 0; i < 2; i++) {
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fclose(fd[i]);
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}
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printf("parsed %d packets\n", expected_id);
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return 0;
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}
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