我正在尝试使用适用于 Windows 的 WinPcap 4.1.1 库，但我什至无法编译随库提供的示例源代码。
我收到这些错误：
'PCAP_OPENFLAG_PROMISCUOUS' 未声明（首次在此函数中使用）
'PCAP_SRC_IF_STRING' 未声明（首次在此函数中使用）
和一堆警告：
函数“localtime_s”的
隐式声明 函数“pcap_findalldevs_ex”的
隐式声明 函数“pcap_open”的
隐式声明 函数“scanf_s”的隐式声明
我用谷歌搜索了一下，发现我应该添加一行#define HAVE_REMOTE（我不知道它是做什么的），但它会导致更多这样的错误：
对“pcap_open”的
未定义引用 对“pcap_findalldevs_ex”的
未定义引用 对“localtime_s”的未定义引用
似乎已"pcap.h"正确包含（eclipse 不报告任何包含错误）。我已将 *.lib 文件复制到 MinGW/lib 目录中并在Path and Symbols->Library Paths（eclipse 项目属性）中设置此路径
我不知道接下来要尝试什么。欢迎任何想法。提前致谢
这是代码：
#include "pcap.h"
/* prototype of the packet handler */
void packet_handler(u_char *param, const struct pcap_pkthdr *header,
const u_char *pkt_data);
int main()
{
pcap_if_t *alldevs;
pcap_if_t *d;
int inum;
int i=0;
pcap_t *adhandle;
char errbuf[PCAP_ERRBUF_SIZE];
/* Retrieve the device list on the local machine */
if (pcap_findalldevs_ex(PCAP_SRC_IF_STRING, NULL, &alldevs, errbuf) == -1)
{
fprintf(stderr,"Error in pcap_findalldevs: %s\n", errbuf);
exit(1);
}
/* Print the list */
for(d=alldevs; d; d=d->next)
{
printf("%d. %s", ++i, d->name);
if (d->description)
printf(" (%s)\n", d->description);
else
printf(" (No description available)\n");
}
if(i==0)
{
printf("\nNo interfaces found! Make sure WinPcap is installed.\n");
return -1;
}
printf("Enter the interface number (1-%d):",i);
scanf_s("%d", &inum);
if(inum < 1 || inum > i)
{
printf("\nInterface number out of range.\n");
/* Free the device list */
pcap_freealldevs(alldevs);
return -1;
}
/* Jump to the selected adapter */
for(d=alldevs, i=0; i< inum-1 ;d=d->next, i++);
/* Open the device */
if ( (adhandle= pcap_open(d->name, // name of the device
65536, // portion of the packet to capture
// 65536 guarantees that the whole packet will be captured
on all the link layers
PCAP_OPENFLAG_PROMISCUOUS, // promiscuous mode
1000, // read timeout
NULL, // authentication on the remote machine
errbuf // error buffer
) ) == NULL)
{
fprintf(stderr,"\nUnable to open the adapter. %s is not supported by
WinPcap\n", d->name);
/* Free the device list */
pcap_freealldevs(alldevs);
return -1;
}
printf("\nlistening on %s...\n", d->description);
/* At this point, we don't need any more the device list. Free it */
pcap_freealldevs(alldevs);
/* start the capture */
pcap_loop(adhandle, 0, packet_handler, NULL);
return 0;
}
/* Callback function invoked by libpcap for every incoming packet */
void packet_handler(u_char *param, const struct pcap_pkthdr *header,
const u_char *pkt_data)
{
struct tm ltime;
char timestr[16];
time_t local_tv_sec;
/*
* unused variables
*/
(VOID)(param);
(VOID)(pkt_data);
/* convert the timestamp to readable format */
local_tv_sec = header->ts.tv_sec;
localtime_s(<ime, &local_tv_sec);
strftime( timestr, sizeof timestr, "%H:%M:%S", <ime);
printf("%s,%.6d len:%d\n", timestr, header->ts.tv_usec, header->len);
}