用py2eno中的Graph，报错json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

这个错误通常是由于无效的JSON格式引起的。可能的原因是你的JSON字符串为空，或者格式不正确。请确保你的JSON字符串是有效的，并且按照正确的格式进行解析。

另外，请确保你已经导入了正确的模块和类，并且使用正确的方法来解析JSON字符串。如果你能提供更多的代码或错误信息，我可以帮助你更好地解决这个问题。

相关问题

ALERT: ET EXPLOIT Grafana 8.x Path Traversal (CVE-2021-43798) 82 Timestamp 2023-06-07T14:21:22.266209+0000 Sensor suricata Protocol TCP Source 172.16.1.23:34770 Destination 10.0.1.4:445 In Interface eno2 Flow ID 997920879570354 Signature ET EXPLOIT Grafana 8.x Path Traversal (CVE-2021-43798) Category Attempted Administrator Privilege Gain Signature ID 1: 2034629 :2 Severity 1 History 2023-06-07 22:26:19 - Archived by anonymous HTTP Hostname: 10.0.1.4 Http Method: GET Http Port: 445 Http User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15 Length: 0 Protocol: HTTP/1.1 Url: /public/plugins/welcome/../../../../../../../../../etc/passwd User Agent.Device: Mac User Agent.Major: 12 User Agent.Minor: 0 User Agent.Name: Safari User Agent.Os: Mac OS X User Agent.Os Full: Mac OS X 10.14.3 User Agent.Os Major: 10 User Agent.Os Minor: 14 User Agent.Os Name: Mac OS X User Agent.Os Patch: 3 User Agent.Os Version: 10.14.3 User Agent.Patch: 3 User Agent.Version: 12.0.3 Payload GET /public/plugins/welcome/../../../../../../../../../etc/passwd HTTP/1.1..Host: 10.0.1.4:445..User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15..Accept-Encoding: gzip....

It looks like you have provided a log of a security event that alerts of a potential exploit of CVE-2021-43798, which is a path traversal vulnerability found in Grafana 8.x. The log shows that there was an attempted administrator privilege gain on the destination IP address 10.0.1.4 from the source IP address 172.16.1.23. The HTTP request was a GET method to the URL "/public/plugins/welcome/../../../../../../../../../etc/passwd" which is an attempt to access the system's password file. The user agent in the request shows that it was made using Safari on a Mac OS X machine. It is important to investigate and mitigate this security event to prevent any potential damage to the system.

socket编程，用c语言实现AF_PACKET发送任意以太网帧，网卡名："eno1"，目标ip：10.1.68.48，目标端口：8888，消息内容："aaa"，填充以太网头、ip头、udp头，展示完整代码

在C语言中，使用socket编程发送ARP包（即包含IP头、UDP头和数据部分的以太网帧）通常需要操作网络接口层（如Linux中的`AF_PACKET`）。以下是一个简化的示例，展示了如何实现这一功能，但请注意，这个例子假设您已经安装了适当的库并有权限访问网卡。由于此任务涉及到底层驱动编程，实际编写过程中可能需要对系统API和结构体有深入理解。

#include <stdio.h>
#include <sys/socket.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>
#include <netinet/ip.h>
#include <netinet/udp.h>

#define ETH_P_ALL 3
#define MAX_PACKET_SIZE 1500

struct ethhdr {
    u8 h_dest[ETH_ALEN]; // 目标地址
    u8 h_source[ETH_ALEN]; // 源地址
    u16 h_proto; // 协议类型（1 for IP）
};

struct iphdr {
    u8 ihl_version;
    u16 tos;       // 类型服务
    u32 total_len;
    u16 id;
    u16 frag_off;  // 分片偏移量
    u8 ttl;
    u8 protocol;
    u16 checksum;
    struct in_addr saddr;
    struct in_addr daddr;
};

struct udphdr {
    u16 source;
    u16 dest;
    u16 len;
    u16 checksum;
};

void send_eth_ip_udp(char *src_mac, char *dst_mac, u32 src_ip, u32 dst_ip, u16 src_port, u16 dst_port, char *msg) {
    int sock = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
    if (sock == -1) {
        perror("Failed to create socket");
        return;
    }

    struct sockaddr_ll addr = {0};
    addr.sll_family = AF_PACKET;
    addr.sll_protocol = htons(ETH_P_IP);
    memcpy(addr.sll_addr, src_mac, ETH_ALEN); // 使用提供的网卡MAC地址
    addr.sll_halen = ETH_ALEN;

    char buffer[MAX_PACKET_SIZE] = {0};
    struct ethhdr *eth = (struct ethhdr *)buffer;
    struct iphdr *iph = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
    struct udphdr *udp = (struct udphdr *)((char *)iph + sizeof(struct iphdr));

    // 设置以太网头信息
    eth->h_dest[0] = dst_mac[0];
    eth->h_dest[1] = dst_mac[1];
    eth->h_dest[2] = dst_mac[2];
    eth->h_dest[3] = dst_mac[3];
    eth->h_dest[4] = dst_mac[4];
    eth->h_dest[5] = dst_mac[5];
    eth->h_source[0] = src_mac[0];
    eth->h_source[1] = src_mac[1];
    eth->h_source[2] = src_mac[2];
    eth->h_source[3] = src_mac[3];
    eth->h_source[4] = src_mac[4];
    eth->h_source[5] = src_mac[5];
    eth->h_proto = htons(ETH_P_IP);

    // 设置IP头信息
    iph->ihl_version = 5; // IPv4
    iph->tos = 0;
    iph->total_len = htons(sizeof(struct ethhdr) + sizeof(struct iphdr) + sizeof(struct udphdr) + strlen(msg) + 1); // 包含头部长度和数据长度
    iph->id = 0;
    iph->frag_off = 0;
    iph->ttl = 64;
    iph->protocol = IPPROTO_UDP;
    iph->checksum = 0; // 需要手动计算或者使用校验工具填充
    iph->saddr.s_addr = htonl(src_ip);
    iph->daddr.s_addr = htonl(dst_ip);

    // 设置UDP头信息
    udp->source = htons(src_port);
    udp->dest = htons(dst_port);
    udp->len = htons(sizeof(struct udphdr) + strlen(msg)); // UDP头大小加上数据大小
    udp->checksum = 0; // 需要手动计算或者使用校验工具填充

    // 添加消息到数据部分
    char *data = (char *)&udp + sizeof(struct udphdr);
    strcpy(data, msg);

    // 计算并设置UDP校验和
    iph->checksum = inet_checksum(iph, NULL, sizeof(*iph), IPPROTO_IP);
    udp->checksum = csum_tcpudp16(0, sizeof(*udp), (unsigned short*)(&data), ntohs(udp->len));

    // 发送数据
    int bytes_sent = sendto(sock, buffer, iph->total_len, 0, (struct sockaddr*)&addr, sizeof(addr));
    if (bytes_sent != iph->total_len) {
        perror("Error sending packet");
    } else {
        printf("Packet sent successfully.\n");
    }
    close(sock);
}

// 用于测试的网卡MAC地址和IP地址
const char* src_mac = "00:11:22:33:44:55";
u32 src_ip = 192.168.1.1;
char* msg = "aaa";

int main() {
    send_eth_ip_udp(src_mac, "00:11:22:33:44:FF", src_ip, 10.1.68.48, 8888, 1234, msg);
    return 0;
}

**注意**: 这个代码片段只是一个简化版，并未处理检查和计算IP头部和UDP头部的校验和，真实环境下的应用通常会使用专门的函数来完成这些计算，例如`inet_checksum`在Linux内核中。此外，如果你是在受限制的环境中运行，比如容器或沙箱，可能无法直接访问硬件网络设备，需要额外权限或其他手段。