ifconfig.cgi.c

uclinux下用cgi 实现直流电机控制

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

int main()
{
	FILE *po;
	char buf[1024];
	char *a;
	char *b = "inet addr:";
	//char *c = "inet addr:";
	char last[16];
	char lo[16];
	char lo2[16];
	printf("Content-Type:text/html\n\n");//头标信号
	printf("<TITLE>显示系统网络信息</TITLE>\n");
	printf("<HR>");
		if((po = popen("ifconfig","r")) == NULL) {    //执行ifconfig,得到相关的IP信息
		printf("bad\n");
		//exit 0;
	}

	while(fgets(buf,1024,po)) {           
		if(memcmp(buf,"eth0",4) == 0) {         //只比较两个字符
			//printf("ok\n");
			//printf("%s\n",buf);
			//a = strstr(buf,b);
			//printf("lo:%s\n",a);
			
		}
		if((a = strstr(buf,b)) != NULL) {   //获得a所指向地址
			//printf("find it inet addr\n");
			//a = a-strlen(c);
			a += strlen(b);    //获得需要输出字符串的地址
			sscanf(a,"%s Bcast:192.168.18.255 %s ",last,lo2);//对字符串进行比对，满足要求的输出
			//sscanf(a,"%s %s",last[0]),last[1]);
			printf("<P>系统的网络信息显示如下：\n</p>");
			printf("IP addr:%s\n",last);
			//printf("bcast:%s\n",lo);
			printf("Net%s\n",lo2);
			printf("</br>");
			printf("</br>");
			printf("</br>");
			
			//fflush(stdout);
		}
		else
			printf("\n");
				//return 0;
	}
		printf("<a href=../sys_form.html>返回首页</a>");
}