修改以下代码，获取target、prot、源地址、源端口、目的地址、目的端口、网络协议共6个参数：#include <stdio.h>#include <stdlib.h>#include <string.h>#define MAX_RULES 100#define MAX_PARAMS 6#define MAX_PARAM_LENGTH 20char iptables[MAX_RULES][MAX_PARAMS][MAX_PARAM_LENGTH];int read_iptables() { FILE *fp; char rule[100]; int rule_count = 0; fp = popen("iptables -L INPUT --line-numbers -n", "r"); if (fp == NULL) { printf("Failed to execute command\n"); return -1; } while (fgets(rule, sizeof(rule), fp) != NULL) { if (strncmp(rule, "Chain", 5) == 0) { continue; } if (strncmp(rule, "num", 3) == 0) { continue; } char *p = strtok(rule, " "); int param_count = 0; while (p != NULL) { if (strncmp(p, "-p", 2) == 0 || strncmp(p, "-s", 2) == 0 || strncmp(p, "--sport", 7) == 0 || strncmp(p, "--dport", 7) == 0 || strncmp(p, "-j", 2) == 0) { strncpy(iptables[rule_count][param_count], p, MAX_PARAM_LENGTH); param_count++; } p = strtok(NULL, " "); } rule_count++; } pclose(fp); return rule_count;}int main() { int rule_count = read_iptables(); for (int i = 0; i < rule_count; i++) { for (int j = 0; j < MAX_PARAMS; j++) { printf("%s ", iptables[i][j]); } printf("\n"); } return 0;}

好的，以下是修改过的代码，可以获取6个参数：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_RULES 100
#define MAX_PARAMS 6
#define MAX_PARAM_LENGTH 20

char iptables[MAX_RULES][MAX_PARAMS][MAX_PARAM_LENGTH];

int read_iptables() {
    FILE *fp;
    char rule[100];
    int rule_count = 0;
    fp = popen("iptables -L INPUT --line-numbers -n", "r");
    if (fp == NULL) {
        printf("Failed to execute command\n");
        return -1;
    }
    while (fgets(rule, sizeof(rule), fp) != NULL) {
        if (strncmp(rule, "Chain", 5) == 0) {
            continue;
        }
        if (strncmp(rule, "num", 3) == 0) {
            continue;
        }
        char *p = strtok(rule, " ");
        int param_count = 0;
        char target[MAX_PARAM_LENGTH];
        char protocol[MAX_PARAM_LENGTH];
        char source[MAX_PARAM_LENGTH];
        char sport[MAX_PARAM_LENGTH];
        char destination[MAX_PARAM_LENGTH];
        char dport[MAX_PARAM_LENGTH];
        while (p != NULL) {
            if (strncmp(p, "-p", 2) == 0) {
                strncpy(protocol, strtok(NULL, " "), MAX_PARAM_LENGTH);
            } else if (strncmp(p, "-s", 2) == 0) {
                strncpy(source, strtok(NULL, " "), MAX_PARAM_LENGTH);
            } else if (strncmp(p, "--sport", 7) == 0) {
                strncpy(sport, strtok(NULL, " "), MAX_PARAM_LENGTH);
            } else if (strncmp(p, "--dport", 7) == 0) {
                strncpy(dport, strtok(NULL, " "), MAX_PARAM_LENGTH);
            } else if (strncmp(p, "-j", 2) == 0) {
                strncpy(target, strtok(NULL, " "), MAX_PARAM_LENGTH);
            }
            p = strtok(NULL, " ");
        }
        strncpy(destination, strtok(rule, " "), MAX_PARAM_LENGTH);
        strncpy(destination, strtok(NULL, " "), MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][0], target, MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][1], protocol, MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][2], source, MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][3], sport, MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][4], destination, MAX_PARAM_LENGTH);
        strncpy(iptables[rule_count][5], dport, MAX_PARAM_LENGTH);
        rule_count++;
    }
    pclose(fp);
    return rule_count;
}

int main() {
    int rule_count = read_iptables();
    for (int i = 0; i < rule_count; i++) {
        for (int j = 0; j < MAX_PARAMS; j++) {
            printf("%s ", iptables[i][j]);
        }
        printf("\n");
    }
    return 0;
}

这个程序将会读取iptables规则并将6个参数存储在`iptables`数组中，然后输出这些参数。你可以在程序中使用这些参数。注意，这个程序中假设规则中只有一个源地址、一个源端口、一个目的地址和一个目的端口。如果规则中有多个源地址、源端口、目的地址或目的端口，需要修改程序以适应这种情况。