writedhcpc.c

webserver

#include<sys/types.h>
#include<stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include<stdlib.h>


#define PATH  "/config/www/"

 main()
{
  

char mac[20];
char ip[20];
char mask[20];
char gateway[20];
char buf[160];
char dns1[20];
char dns2[20];
char ntpserver[150];

strcpy(mac,"AA:11:12:13:14:15");
strcpy(ip,"192.168.1.56");
strcpy(mask,"255.255.255.0");
strcpy(gateway,"192.168.1.1");
strcpy(dns1,"61.235.70.98");
strcpy(dns2,"211.98.4.1");
strcpy(ntpserver,"61.129.42.44");


/********************read the config file*********************************************/

     FILE *netfpr;
      char filename_net[100];
      strcpy(filename_net,PATH);
      strcat(filename_net,"network.conf");
     
        //read MAC info 
      if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }
        
      while(fscanf(netfpr,"MACADDR=%s\n",mac)!=EOF)
      { fscanf(netfpr,"%*[^\n]%*c");
       if (strlen(mac)!=0) break; }

      fclose(netfpr);
 
       //read IP info 
    if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }
        
      while(fscanf(netfpr,"IPADDR=%s\n",ip)!=EOF)
      { fscanf(netfpr,"%*[^\n]%*c");
       if (strlen(ip)!=0) break; }

      fclose(netfpr);

     //read mask info
     if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }
      
      while(fscanf(netfpr,"NETMASK=%s\n",mask)!=EOF)
       {fscanf(netfpr,"%*[^\n]%*c");
       if (strlen(mask)!=0) break; }

      fclose(netfpr);

    //read gateway info
    if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }
       
      while(fscanf(netfpr,"GATEWAY=%s\n",gateway)!=EOF)
       {fscanf(netfpr,"%*[^\n]%*c");
         if (strlen(gateway)!=0) break; }

     fclose(netfpr);

       //read dns1 info
      if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }

      while(fscanf(netfpr,"DNS1=%s\n",dns1)!=EOF)
       {fscanf(netfpr,"%*[^\n]%*c");
        if (strlen(dns1)!=0) break; }

      fclose(netfpr);
      
      //read dns2 info
      if ( (netfpr=fopen(filename_net,"r"))==NULL )
          {printf("can not open network.conf to read!<br>\n"); }

      while(fscanf(netfpr,"DNS2=%s\n",dns2)!=EOF)
       {fscanf(netfpr,"%*[^\n]%*c");
        if (strlen(dns2)!=0) break; }

     //read ntpserver info
      if ( (netfpr=fopen(filename_net,"r"))==NULL )
        {printf("can not open network.conf to read!<br>\n"); }

     while(fscanf(netfpr,"NTPSERVER=%s\n",ntpserver)!=EOF)
        {fscanf(netfpr,"%*[^\n]%*c");
        if (strlen(dns2)!=0) break; }
     fclose(netfpr);

    

//***
/********************read the config file*********************************************/



//read dhcpc temp file,get the ip and dns
    FILE *dhcpcfp;
    char filename_udhcpc[100];
    strcpy(filename_udhcpc,PATH);
    strcat(filename_udhcpc,"udhcpc.txt");
  if ((dhcpcfp= fopen(filename_udhcpc, "r")) == NULL) {
   printf("Error in open configure file.<br>\n");
   exit(1);
     };

char head1[20];
char head2[20];
while(fscanf(dhcpcfp,"%s",head1)!=EOF) 
{
   //printf("head1=%s\n",head1);
   if (strcmp(head1,"Lease")==0) //scan Lease
     { fscanf(dhcpcfp,"%s",head2);
       if (strcmp(head2,"of")==0) 
            {fscanf(dhcpcfp,"%s",ip); fscanf(dhcpcfp,"%*[^\n]%*c"); }
        else fscanf(dhcpcfp,"%*[^\n]%*c");
      }

   else if (strcmp(head1,"adding")==0) //scan adding
      { fscanf(dhcpcfp,"%s",head2);
       if (strcmp(head2,"dns")==0) 
          {fscanf(dhcpcfp,"%s",dns1); fscanf(dhcpcfp,"%*[^\n]%*c");
           fscanf(dhcpcfp,"%s",head1);fscanf(dhcpcfp,"%s",head2);fscanf(dhcpcfp,"%s",dns2); fscanf(dhcpcfp,"%*[^\n]%*c"); }
        else fscanf(dhcpcfp,"%*[^\n]%*c");
       }

   else fscanf(dhcpcfp,"%*[^\n]%*c"); //jump

}
   fclose(dhcpcfp);



printf("mac=%s\n",mac);
printf("ip=%s\n",ip);
printf("mask=%s\n",mask);
printf("dns1=%s\n",dns1);
printf("dns2=%s\n",dns2);

//write configure file network.conf
  FILE *netfpw;
 if ( !(netfpw=fopen(filename_net,"w+")) )
          {printf("can not open network.conf to write!<br>\n"); }   

     fprintf(netfpw,"MACADDR=%s\n",mac);
    fprintf(netfpw,"IPADDR=%s\n",ip);
    fprintf(netfpw,"NETMASK=%s\n",mask);
    fprintf(netfpw,"GATEWAY=%s\n",gateway);
    fprintf(netfpw,"DNS1=%s\n",dns1);
    fprintf(netfpw,"DNS2=%s\n",dns2);
    fprintf(netfpw,"NTPSERVER=%s\n",ntpserver);
    fprintf(netfpw,"DHCPC=1\n");
    fprintf(netfpw,"DHCPD=0\n");
    fclose(netfpw); 




}